diff --git a/doc/ExMenu1.png b/doc/ExMenu1.png
new file mode 100644
index 0000000..b1b023d
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diff --git a/doc/ExMenu2.png b/doc/ExMenu2.png
new file mode 100644
index 0000000..6c1403e
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diff --git a/doc/VRC_Log.png b/doc/VRC_Log.png
new file mode 100644
index 0000000..3e2d007
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diff --git a/src/vrc_log/log_actions.py b/src/vrc_log/log_actions.py
index c70a385..2ea7047 100644
--- a/src/vrc_log/log_actions.py
+++ b/src/vrc_log/log_actions.py
@@ -73,10 +73,11 @@ param(
     [string]$Message
 )
 
-[Console]::OutputEncoding = [System.Text.Encoding]::UTF8
-$Payload = @{ content = $Message } | ConvertTo-Json -Compress
-$Body = [System.Text.Encoding]::UTF8.GetBytes($Payload)
-Invoke-WebRequest -Uri $WebhookUrl -Method Post -ContentType 'application/json; charset=utf-8' -Body $Body -UseBasicParsing | Out-Null
+    [Console]::OutputEncoding = [System.Text.Encoding]::UTF8
+    $Payload = @{ content = $Message } | ConvertTo-Json -Compress
+    $Body = [System.Text.Encoding]::UTF8.GetBytes($Payload)
+    $Response = Invoke-WebRequest -Uri $WebhookUrl -Method Post -ContentType 'application/json; charset=utf-8' -Body $Body -UseBasicParsing
+    Write-Output ("STATUS=" + $Response.StatusCode)
 '''
 
     ps_path = None
@@ -124,6 +125,9 @@ Invoke-WebRequest -Uri $WebhookUrl -Method Post -ContentType 'application/json;
         log("ERROR", f"Discord webhook PowerShell failed code={result.returncode} stderr={stderr} stdout={stdout}")
         return False
 
+    stdout = (result.stdout or "").strip()
+    if stdout:
+        log("INFO", f"Discord webhook PowerShell stdout={stdout}")
     log("INFO", "Discord webhook sent via PowerShell")
     return True
 
@@ -274,6 +278,17 @@ def appendNoticeIfNeeded(output_lines, state):
     state["last_notice_key"] = notice_key
 
 
+def debug(message):
+    log("DEBUG", message)
+
+
+def formatJoinLeaveLine(line_time, action, name, state, guest_names):
+    staff_count = len(state["staff_present_set"])
+    member_count = len(state["member_present_set"])
+    guest_count = len(state["guest_names"])
+    return f'[{formatClock(line_time)}][{action}] {name} {member_count - staff_count}/{guest_count}'
+
+
 def parseVrchatEvents(text, config):
     start_time = getLogStartTime(datetime.now())
     guest_names = config["guest_names"]
@@ -316,8 +331,10 @@ def parseVrchatEvents(text, config):
                 state["member_present_set"].clear()
                 state["last_notice_key"] = None
                 output_lines = []
-                output_lines.append(f"ワールド入室: {formatWorldLabel(world_id, world_name_map)}")
-                output_lines.append(f"現在Guest: 0/{len(guest_names)}")
+                world_label = formatWorldLabel(world_id, world_name_map)
+                if world_label != "不明":
+                    output_lines.append(f"ワールド入室: {world_label}")
+                debug(f"world changed world_id={world_id} label={world_label}")
 
         join_match = JOIN_PATTERN.search(raw_line)
         if join_match and state["world_id"]:
@@ -325,9 +342,7 @@ def parseVrchatEvents(text, config):
             if isSelf(name, self_name):
                 self_state = "joined"
                 state["member_present_set"].add(name)
-                output_lines.append(
-                    f'[{formatClock(line_time)}] [join] [self] {name} {len(state["member_present_set"])}/{len(guest_names)}'
-                )
+                output_lines.append(formatJoinLeaveLine(line_time, "join", name, state, guest_names))
                 continue
 
             role = classifyUser(name, state["guest_name_set"], state["staff_names"])
@@ -335,20 +350,14 @@ def parseVrchatEvents(text, config):
             if role == "guest":
                 state["guest_present_set"].add(name)
                 state["member_present_set"].add(name)
-                output_lines.append(
-                    f'[{formatClock(line_time)}] [join] {name} {len(state["member_present_set"])}/{len(guest_names)}'
-                )
+                output_lines.append(formatJoinLeaveLine(line_time, "join", name, state, guest_names))
                 appendNoticeIfNeeded(output_lines, state)
             elif role == "staff":
                 state["staff_present_set"].add(name)
-                output_lines.append(
-                    f'[{formatClock(line_time)}] [join] [staff] {name} {len(state["member_present_set"])}/{len(guest_names)}'
-                )
+                output_lines.append(formatJoinLeaveLine(line_time, "join", name, state, guest_names))
             else:
                 state["member_present_set"].add(name)
-                output_lines.append(
-                    f'[{formatClock(line_time)}] [join] {name} {len(state["member_present_set"])}/{len(guest_names)}'
-                )
+                output_lines.append(formatJoinLeaveLine(line_time, "join", name, state, guest_names))
             continue
 
         left_match = LEFT_PATTERN.search(raw_line)
@@ -357,9 +366,7 @@ def parseVrchatEvents(text, config):
             if isSelf(name, self_name):
                 self_state = "left"
                 state["member_present_set"].discard(name)
-                output_lines.append(
-                    f'[{formatClock(line_time)}] [leave] [self] {name} {len(state["member_present_set"])}/{len(guest_names)}'
-                )
+                output_lines.append(formatJoinLeaveLine(line_time, "leave", name, state, guest_names))
                 continue
 
             role = classifyUser(name, state["guest_name_set"], state["staff_names"])
@@ -367,20 +374,14 @@ def parseVrchatEvents(text, config):
             if role == "guest":
                 state["guest_present_set"].discard(name)
                 state["member_present_set"].discard(name)
-                output_lines.append(
-                    f'[{formatClock(line_time)}] [leave] {name} {len(state["member_present_set"])}/{len(guest_names)}'
-                )
+                output_lines.append(formatJoinLeaveLine(line_time, "leave", name, state, guest_names))
                 appendNoticeIfNeeded(output_lines, state)
             elif role == "staff":
                 state["staff_present_set"].discard(name)
-                output_lines.append(
-                    f'[{formatClock(line_time)}] [leave] [staff] {name} {len(state["member_present_set"])}/{len(guest_names)}'
-                )
+                output_lines.append(formatJoinLeaveLine(line_time, "leave", name, state, guest_names))
             else:
                 state["member_present_set"].discard(name)
-                output_lines.append(
-                    f'[{formatClock(line_time)}] [leave] {name} {len(state["member_present_set"])}/{len(guest_names)}'
-                )
+                output_lines.append(formatJoinLeaveLine(line_time, "leave", name, state, guest_names))
 
     return output_lines, self_state
 
@@ -417,12 +418,17 @@ def collectVrchatLog(pattern=None, notify_changed=True):
     text = readTextSafe(latest_log)
     lines, self_state = parseVrchatEvents(text, config)
 
+    has_join_leave = any("[join]" in line or "[leave]" in line for line in lines)
+    if has_join_leave:
+        lines = ["[DEBUG] 入退出イベント検出"] + lines
+
     output_text = "\n".join(lines) if lines else "[INFO] 対象イベントなし"
     output_path = appendRuntimeLog("VRC LOG", output_text)
 
     if notify_changed:
         global _last_sent_output
-        if output_text != _last_sent_output:
+        should_send = output_text != _last_sent_output or has_join_leave
+        if should_send:
             try:
                 ok = sendWebhook(output_text)
                 if ok:
@@ -434,8 +440,11 @@ def collectVrchatLog(pattern=None, notify_changed=True):
                 log("ERROR", f"Discord webhook failed detail={e}")
 
     log("INFO", f"result appended={output_path}")
-    for line in lines or ["[INFO] 対象イベントなし"]:
-        print(line, flush=True)
+    if lines:
+        for line in lines:
+            print(line, flush=True)
+    else:
+        debug("対象イベントなし")
 
     return output_path
 
@@ -479,9 +488,7 @@ def _watchVrchatLogChanges(stop_event, label, on_relevant_change):
 
             if latest_size > offset:
                 text, offset = _readNewText(latest_log, offset)
-
-                if RELEVANT_LOG_PATTERN.search(text):
-                    on_relevant_change(text)
+                on_relevant_change(text)
         except Exception as e:
             log("ERROR", f"{label} realtime watcher failed detail={e}")
 
@@ -491,7 +498,10 @@ def _watchVrchatLogChanges(stop_event, label, on_relevant_change):
 
 
 def _monitor_loop():
-    def on_relevant_change(_text):
+    def on_relevant_change(text):
+        preview = " ".join(text.splitlines()[:3]).strip()
+        if preview:
+            debug(f"VRC log monitor change preview={preview[:180]}")
         collectVrchatLog(notify_changed=True)
 
     _watchVrchatLogChanges(