diff --git a/vba_code_kukan_detail_master.txt b/vba_code_kukan_detail_master.txt
index aa92541..70d7bc5 100644
--- a/vba_code_kukan_detail_master.txt
+++ b/vba_code_kukan_detail_master.txt
@@ -2,25 +2,6 @@
 Const CSV_HEADER As String = "利用区間コード,券種,コード,名称,1箇月運賃/販売額,定期額/券１(額)/利用額,定期支給期間/券１(枚)/特別料金,特別料金/券２(額),券２(枚),端数(額),特別料金"
 
 Private Sub Worksheet_Change(ByVal Target As Range)
-    ' === Generate F dropdown based on G column (matching left of colon) ===
-    If Target.Column = 7 And Target.Row >= 7 Then
-        If Target.Count > 1 Then Exit Sub
-        Call MakeFDropdownByG(Me, Target.Row)
-    End If
-    
-    ' === Extract left of colon to G column when F changes ===
-    If Target.Column = 6 And Target.Row >= 7 Then
-        If Target.Count > 1 Then Exit Sub
-        If Trim(Target.Value) <> "" Then
-            Dim fValue As String
-            fValue = Trim(Target.Value)
-            If InStr(fValue, ":") > 0 Then
-                Target.Offset(0, 1).Value = Split(fValue, ":")(0)
-                ' Don't trigger MakeFDropdownByG again - it's already set
-            End If
-        End If
-    End If
-    
     ' === Fill D, E when C column changes ===
     If Target.Column = 3 And Target.Row >= 7 Then
         Dim cell As Range
@@ -57,7 +38,6 @@ Sub FillFromKukanMaster(ByVal ws As Worksheet, ByVal rowNum As Long, Optional By
             ws.Cells(rowNum, 8).Value = Trim(wsKukan.Cells(i, 14).Value)
             If setG Then
                 ws.Cells(rowNum, 7).Value = "1"
-                Call MakeFDropdownByG(ws, rowNum)
             End If
             Exit Sub
         End If
@@ -74,66 +54,7 @@ Sub ClearRowData(ByVal ws As Worksheet, ByVal rowNum As Long)
     ws.Cells(rowNum, 19).ClearContents ' Q column error info
 End Sub
 
-Sub MakeFDropdownByG(ByVal ws As Worksheet, ByVal rowNum As Long)
-    Dim wsKotsu As Worksheet
-    Dim lastRowKotsu As Long
-    Dim k As Long
-    Dim kotsuList As String
-    Dim kotsuA As String
-    Dim kotsuB As String
-    Dim gValue As String
-    Dim fVal As String
-    Dim targetCellF As Range
-    
-    gValue = Trim(ws.Cells(rowNum, 7).Value)
-    fVal = Trim(ws.Cells(rowNum, 6).Value)
-    
-    ' Skip if F already has matching value (prevent loop)
-    If fVal <> "" And InStr(fVal, ":") > 0 Then
-        If Split(fVal, ":")(0) = gValue Then
-            Exit Sub
-        End If
-    End If
-    
-    On Error Resume Next
-    Set wsKotsu = ThisWorkbook.Worksheets("Kotsu_Master")
-    On Error GoTo 0
-    
-    If wsKotsu Is Nothing Then Exit Sub
-    If gValue = "" Then Exit Sub
-    
-    lastRowKotsu = wsKotsu.Cells(wsKotsu.Rows.Count, "A").End(xlUp).Row
-    
-    kotsuList = ""
-    For k = 4 To lastRowKotsu
-        kotsuA = Trim(wsKotsu.Cells(k, 1).Value)
-        kotsuB = Trim(wsKotsu.Cells(k, 2).Value)
-        If kotsuA <> "" Then
-            If kotsuList <> "" Then kotsuList = kotsuList & ","
-            kotsuList = kotsuList & kotsuA & ":" & kotsuB
-        End If
-    Next k
-    
-    Set targetCellF = ws.Cells(rowNum, 6)
-    On Error Resume Next
-    targetCellF.ClearContents
-    targetCellF.Validation.Delete
-    On Error GoTo 0
-    
-    If kotsuList <> "" Then
-        On Error Resume Next
-        targetCellF.Validation.Add Type:=xlValidateList, Formula1:=kotsuList
-        targetCellF.Validation.IgnoreBlank = True
-        targetCellF.Validation.ShowDropDownWhenSelected = True
-        ' Auto select the first matching one
-        For k = 4 To lastRowKotsu
-            If Trim(wsKotsu.Cells(k, 1).Value) = gValue Then
-                targetCellF.Value = gValue & ":" & Trim(wsKotsu.Cells(k, 2).Value)
-                Exit For
-            End If
-        Next k
-    End If
-End Sub
+
 
 
 
@@ -251,9 +172,7 @@ NextCsvLine:
         Call FillFromKukanMaster(wsTarget, writeRow, False)
         
         ' G column has value → trigger F dropdown
-        If Trim(wsTarget.Cells(writeRow, 7).Value) <> "" Then
-            Call MakeFDropdownByG(wsTarget, writeRow)
-        End If
+
         
         writeRow = writeRow + 1
 NextLine: