diff --git a/locales/en.yml b/locales/en.yml
index 1faf9639..5dabb4b2 100644
--- a/locales/en.yml
+++ b/locales/en.yml
@@ -250,6 +250,13 @@ config_page:
         received_message_format:
             label: "Message Format (Speaker2Chatbox)"
             desc: "Currently, it is used in Speaker2Chatbox."
+        convert_message_to_romaji:
+            label: Show Romaji
+            desc: Supported only when Japanese is selected as the translation language. When enabled along with '{{convert_message_to_hiragana}}', romaji will be shown on mouse hover.
+        convert_message_to_hiragana:
+            label: Show Hiragana
+            desc: Supported only when Japanese is selected as the translation language.
+
 
     hotkeys:
         toggle_vrct_visibility:
diff --git a/locales/ja.yml b/locales/ja.yml
index d3da554e..b4097a9a 100644
--- a/locales/ja.yml
+++ b/locales/ja.yml
@@ -250,6 +250,12 @@ config_page:
         received_message_format:
             label: メッセージフォーマット（Speaker2Chatbox）
             desc: 今のところ、Speaker2Chatboxで送信した時の表示に使われます。
+        convert_message_to_romaji:
+            label: ローマ字を表示
+            desc: 翻訳言語として日本語を選択した時のみサポート。「{{convert_message_to_hiragana}}」と同時に有効にした場合は、マウスホバーで表示されます。
+        convert_message_to_hiragana:
+            label: ひらがなを表示
+            desc: 翻訳言語として日本語を選択した時のみサポート。
 
     hotkeys:
         toggle_vrct_visibility:
diff --git a/src-ui/app/config_page/setting_section/setting_box/others/Others.jsx b/src-ui/app/config_page/setting_section/setting_box/others/Others.jsx
index 65027ef3..5ef39ce0 100644
--- a/src-ui/app/config_page/setting_section/setting_box/others/Others.jsx
+++ b/src-ui/app/config_page/setting_section/setting_box/others/Others.jsx
@@ -45,6 +45,10 @@ export const Others = () => {
                 <SendMessageFormatPartsContainer />
                 <ReceivedMessageFormatPartsContainer />
             </div>
+            <div>
+                <ConvertMessageToRomajiContainer />
+                <ConvertMessageToHiraganaContainer />
+            </div>
         </div>
     );
 };
@@ -201,4 +205,35 @@ const ReceivedMessageFormatPartsContainer = () => {
             format_id="received"
         />
     );
+};
+
+const ConvertMessageToRomajiContainer = () => {
+    const { t } = useI18n();
+    const { currentConvertMessageToRomaji, toggleConvertMessageToRomaji } = useOthers();
+
+    return (
+        <CheckboxContainer
+            label={t("config_page.others.convert_message_to_romaji.label")}
+            desc={t(
+                "config_page.others.convert_message_to_romaji.desc",
+                { convert_message_to_hiragana: t("config_page.others.convert_message_to_hiragana.label") }
+            )}
+            variable={currentConvertMessageToRomaji}
+            toggleFunction={toggleConvertMessageToRomaji}
+        />
+    );
+};
+
+const ConvertMessageToHiraganaContainer = () => {
+    const { t } = useI18n();
+    const { currentConvertMessageToHiragana, toggleConvertMessageToHiragana } = useOthers();
+
+    return (
+        <CheckboxContainer
+            label={t("config_page.others.convert_message_to_hiragana.label")}
+            desc={t("config_page.others.convert_message_to_hiragana.desc")}
+            variable={currentConvertMessageToHiragana}
+            toggleFunction={toggleConvertMessageToHiragana}
+        />
+    );
 };
\ No newline at end of file
diff --git a/src-ui/app/main_page/main_section/message_container/log_box/message_container/MessageContainer.jsx b/src-ui/app/main_page/main_section/message_container/log_box/message_container/MessageContainer.jsx
index d982f27c..cd36754d 100644
--- a/src-ui/app/main_page/main_section/message_container/log_box/message_container/MessageContainer.jsx
+++ b/src-ui/app/main_page/main_section/message_container/log_box/message_container/MessageContainer.jsx
@@ -39,7 +39,7 @@ export const MessageContainer = ({ messages, status, category, created_at }) =>
         setIsLocked(true);
     };
 
-    const is_translated_exist = messages.translated?.length >= 1;
+    const is_translation_exist = messages.translations?.length > 0;
     const is_pending = status === "pending";
     const is_sent_message = category === "sent";
     const is_system_message = category === "system";
@@ -69,11 +69,11 @@ export const MessageContainer = ({ messages, status, category, created_at }) =>
                 </div>
                 <div className={clsx(styles.message_box, message_type_class_name)}>
                     {is_system_message ? (
-                        <p className={styles.message_main_system}>{messages.message}</p>
-                    ) : is_translated_exist ? (
+                        <p className={styles.message_main_system}>{messages.original.message}</p>
+                    ) : is_translation_exist ? (
                         <WithTranslatedMessages messages={messages} />
                     ) : (
-                        <p className={styles.message_main}>{messages.original}</p>
+                        <OriginalMessage messages={messages} />
                     )}
                 </div>
             </div>
@@ -88,13 +88,74 @@ export const MessageContainer = ({ messages, status, category, created_at }) =>
     );
 };
 
-const WithTranslatedMessages = ({ messages }) => {
-    const translated_data = Array.isArray(messages.translated) ? messages.translated : [messages.translated];
+const MessageWithTransliteration = ({ item }) => {
+    const renderTokenNode = (token, key) => {
+        const orig = token.orig ?? "";
+        const hira = token.hira ?? "";
+        const hepburn = token.hepburn ?? "";
+
+        if ((hira && orig === hira) || (hepburn && orig === hepburn) || (!hira && !hepburn)) {
+            return (
+                <span key={key} className={styles.token}>
+                    {orig}
+                </span>
+            );
+        }
+
+        if (hira && hira !== orig) {
+            const needHepburn = hepburn && hepburn !== orig;
+            const titleAttr = needHepburn ? hepburn : undefined;
+            return (
+                <ruby key={key} title={titleAttr} className={styles.tokenRuby}>
+                    {orig}
+                    <rt>{hira}</rt>
+                </ruby>
+            );
+        }
+
+        if (hepburn && hepburn !== orig) {
+            return (
+                <ruby key={key} className={styles.tokenRuby}>
+                    {orig}
+                    <rt>{hepburn}</rt>
+                </ruby>
+            );
+        }
+
+        return (
+            <span key={key} className={styles.token}>
+                {orig}
+            </span>
+        );
+    };
+
+    if (!item.transliteration.length) {
+        return <p className={styles.message_main}>{item.message}</p>;
+    }
+
+    return (
+        <p className={styles.message_main}>
+            {item.transliteration.map((token, idx) => renderTokenNode(token, idx))}
+        </p>
+    );
+};
+
+const OriginalMessage = ({ messages }) => {
     return (
         <>
-            <p className={styles.message_second}>{messages.original}</p>
-            {translated_data.map((message, index) => (
-                <p key={index} className={styles.message_main}>{message}</p>
+            <MessageWithTransliteration item={messages.original} />
+        </>
+    );
+};
+
+const WithTranslatedMessages = ({ messages }) => {
+    return (
+        <>
+            <p className={styles.message_second}>{messages.original.message}</p>
+            {messages.translations.map((item, idx) => (
+                <div key={idx}>
+                    <MessageWithTransliteration item={item} />
+                </div>
             ))}
         </>
     );
diff --git a/src-ui/logics/common/useMessage.js b/src-ui/logics/common/useMessage.js
index 78986b55..1b50bbbd 100644
--- a/src-ui/logics/common/useMessage.js
+++ b/src-ui/logics/common/useMessage.js
@@ -24,8 +24,8 @@ export const useMessage = () => {
             status: "pending",
             created_at: generateTimeData(),
             messages: {
-                original: message,
-                translated: [],
+                original: { message: message, transliteration: [] },
+                translations: [],
             },
         });
     };
@@ -39,20 +39,26 @@ export const useMessage = () => {
             category: "system",
             status: "system",
             created_at: date,
-            messages: {message: message},
+            messages: {
+                original: { message: message, transliteration: [] },
+                translations: [],
+            },
         });
     };
+
     const addSystemMessageLog_FromBackend = (payload) => {
         addSystemMessageLog(payload.message);
     };
 
     const updateSentMessageLogById = (payload) => {
-        updateMessageLogs(updateItemById(payload.id, payload.translation));
+        updateMessageLogs(updateItemById(payload.id, payload));
     };
+
     const addSentMessageLog = (payload) => {
         const message_object = generateMessageObject(payload, "sent");
         addMessageLogs(message_object);
     };
+
     const addReceivedMessageLog = (payload) => {
         const message_object = generateMessageObject(payload, "received");
         addMessageLogs(message_object);
@@ -61,6 +67,7 @@ export const useMessage = () => {
     const startTyping = () => {
         asyncStdoutToPython("/run/typing_message_box");
     };
+
     const stopTyping = () => {
         asyncStdoutToPython("/run/stop_typing_message_box");
     };
@@ -83,11 +90,10 @@ export const useMessage = () => {
 };
 
 const generateTimeData = () => {
-    const data = new Date().toLocaleTimeString(
+    return new Date().toLocaleTimeString(
         "ja-JP",
-        { hour12: false, hour: "2-digit", minute: "2-digit" },
+        { hour12: false, hour: "2-digit", minute: "2-digit" }
     );
-    return data;
 };
 
 const generateMessageObject = (data, category) => {
@@ -97,17 +103,17 @@ const generateMessageObject = (data, category) => {
         category: category,
         status: "ok",
         messages: {
-            original: data.message,
-            translated: data.translation,
+            original: data.original,
+            translations: data.translations ?? [],
         },
     };
 };
 
-const updateItemById = (id, translated_data) => (current_items) => {
+const updateItemById = (id, updated_data) => (current_items) => {
     return current_items.data.map(item => {
         if (item.id === id) {
             item.status = "ok";
-            item.messages.translated = translated_data;
+            if (updated_data.translations) item.messages.translations = updated_data.translations;
         }
         return item;
     });
diff --git a/src-ui/logics/configs/others/useOthers.js b/src-ui/logics/configs/others/useOthers.js
index c2b0179f..855ab24e 100644
--- a/src-ui/logics/configs/others/useOthers.js
+++ b/src-ui/logics/configs/others/useOthers.js
@@ -9,6 +9,8 @@ import {
     useStore_MessageFormat_ExampleViewFilter,
     useStore_SendMessageFormatParts,
     useStore_ReceivedMessageFormatParts,
+    useStore_ConvertMessageToRomaji,
+    useStore_ConvertMessageToHiragana,
 } from "@store";
 import { useStdoutToPython } from "@useStdoutToPython";
 import { useNotificationStatus } from "@logics_common";
@@ -39,6 +41,11 @@ export const useOthers = () => {
     // Received
     const { currentReceivedMessageFormatParts, updateReceivedMessageFormatParts, pendingReceivedMessageFormatParts } = useStore_ReceivedMessageFormatParts();
 
+    // Convert Message To Romaji
+    const { currentConvertMessageToRomaji, updateConvertMessageToRomaji, pendingConvertMessageToRomaji } = useStore_ConvertMessageToRomaji();
+    // Convert Message To Hiragana
+    const { currentConvertMessageToHiragana, updateConvertMessageToHiragana, pendingConvertMessageToHiragana } = useStore_ConvertMessageToHiragana();
+
     const { showNotification_SaveSuccess } = useNotificationStatus();
 
     // Auto Clear Message Input Box
@@ -233,6 +240,45 @@ export const useOthers = () => {
         });
     };
 
+    // Convert Message To Romaji
+    const getConvertMessageToRomaji = () => {
+        pendingConvertMessageToRomaji();
+        asyncStdoutToPython("/get/data/convert_message_to_romaji");
+    };
+
+    const toggleConvertMessageToRomaji = () => {
+        pendingConvertMessageToRomaji();
+        if (currentConvertMessageToRomaji.data) {
+            asyncStdoutToPython("/set/disable/convert_message_to_romaji");
+        } else {
+            asyncStdoutToPython("/set/enable/convert_message_to_romaji");
+        }
+    };
+
+    const setSuccessConvertMessageToRomaji = (enabled) => {
+        updateConvertMessageToRomaji(enabled);
+        showNotification_SaveSuccess();
+    };
+
+    // Convert Message To Hiragana
+    const getConvertMessageToHiragana = () => {
+        pendingConvertMessageToHiragana();
+        asyncStdoutToPython("/get/data/convert_message_to_hiragana");
+    };
+
+    const toggleConvertMessageToHiragana = () => {
+        pendingConvertMessageToHiragana();
+        if (currentConvertMessageToHiragana.data) {
+            asyncStdoutToPython("/set/disable/convert_message_to_hiragana");
+        } else {
+            asyncStdoutToPython("/set/enable/convert_message_to_hiragana");
+        }
+    };
+
+    const setSuccessConvertMessageToHiragana = (enabled) => {
+        updateConvertMessageToHiragana(enabled);
+        showNotification_SaveSuccess();
+    };
 
     return {
         // Auto Clear Message Input Box
@@ -303,5 +349,19 @@ export const useOthers = () => {
         getReceivedMessageFormatParts,
         setReceivedMessageFormatParts,
         setSuccessReceivedMessageFormatParts,
+
+        // Convert Message To Romaji
+        currentConvertMessageToRomaji,
+        getConvertMessageToRomaji,
+        toggleConvertMessageToRomaji,
+        updateConvertMessageToRomaji,
+        setSuccessConvertMessageToRomaji,
+
+        // Convert Message To Hiragana
+        currentConvertMessageToHiragana,
+        getConvertMessageToHiragana,
+        toggleConvertMessageToHiragana,
+        updateConvertMessageToHiragana,
+        setSuccessConvertMessageToHiragana,
     };
 };
\ No newline at end of file
diff --git a/src-ui/logics/useReceiveRoutes.js b/src-ui/logics/useReceiveRoutes.js
index c36b5fa7..a5e6d8ed 100644
--- a/src-ui/logics/useReceiveRoutes.js
+++ b/src-ui/logics/useReceiveRoutes.js
@@ -292,6 +292,14 @@ export const ROUTE_META_LIST = [
     { endpoint: "/get/data/received_message_format_parts", ns: configs, hook_name: "useOthers", method_name: "updateReceivedMessageFormatParts" },
     { endpoint: "/set/data/received_message_format_parts", ns: configs, hook_name: "useOthers", method_name: "setSuccessReceivedMessageFormatParts" },
 
+    { endpoint: "/get/data/convert_message_to_romaji", ns: configs, hook_name: "useOthers", method_name: "updateConvertMessageToRomaji" },
+    { endpoint: "/set/enable/convert_message_to_romaji", ns: configs, hook_name: "useOthers", method_name: "setSuccessConvertMessageToRomaji" },
+    { endpoint: "/set/disable/convert_message_to_romaji", ns: configs, hook_name: "useOthers", method_name: "setSuccessConvertMessageToRomaji" },
+
+    { endpoint: "/get/data/convert_message_to_hiragana", ns: configs, hook_name: "useOthers", method_name: "updateConvertMessageToHiragana" },
+    { endpoint: "/set/enable/convert_message_to_hiragana", ns: configs, hook_name: "useOthers", method_name: "setSuccessConvertMessageToHiragana" },
+    { endpoint: "/set/disable/convert_message_to_hiragana", ns: configs, hook_name: "useOthers", method_name: "setSuccessConvertMessageToHiragana" },
+
     // Hotkeys
     { endpoint: "/get/data/hotkeys", ns: configs, hook_name: "useHotkeys", method_name: "updateHotkeys" },
     { endpoint: "/set/data/hotkeys", ns: configs, hook_name: "useHotkeys", method_name: "setSuccessHotkeys" },
@@ -323,8 +331,6 @@ export const ROUTE_META_LIST = [
     { endpoint: "/get/data/mic_no_speech_prob", ns: null, hook_name: null, method_name: null }, // Not implemented on UI yet
     { endpoint: "/get/data/speaker_avg_logprob", ns: null, hook_name: null, method_name: null }, // Not implemented on UI yet
     { endpoint: "/get/data/speaker_no_speech_prob", ns: null, hook_name: null, method_name: null }, // Not implemented on UI yet
-    { endpoint: "/get/data/convert_message_to_romaji", ns: null, hook_name: null, method_name: null }, // Not implemented on UI yet
-    { endpoint: "/get/data/convert_message_to_hiragana", ns: null, hook_name: null, method_name: null }, // Not implemented on UI yet
     { endpoint: "/get/data/transcription_engines", ns: null, hook_name: null, method_name: null }, // Not implemented on UI yet. (if ai_models has not been detected, this will be blank array[]. if the ai_models are ok but just network has not connected, it'l be only ["Whisper"])
 ];
 
diff --git a/src-ui/store.js b/src-ui/store.js
index e36aad46..6c31e87f 100644
--- a/src-ui/store.js
+++ b/src-ui/store.js
@@ -309,6 +309,8 @@ export const { atomInstance: Atom_ReceivedMessageFormatParts, useHook: useStore_
     },
     translation_first: false,
 }, "ReceivedMessageFormatParts");
+export const { atomInstance: Atom_ConvertMessageToRomaji, useHook: useStore_ConvertMessageToRomaji } = createAtomWithHook(false, "ConvertMessageToRomaji");
+export const { atomInstance: Atom_ConvertMessageToHiragana, useHook: useStore_ConvertMessageToHiragana } = createAtomWithHook(false, "ConvertMessageToHiragana");
 
 
 // Hotkeys