diff --git a/frontend/src/components/PostFormTagsArea.tsx b/frontend/src/components/PostFormTagsArea.tsx
index b5fac1a..c7775af 100644
--- a/frontend/src/components/PostFormTagsArea.tsx
+++ b/frontend/src/components/PostFormTagsArea.tsx
@@ -25,8 +25,8 @@ const getTokenAt = (value: string, pos: number) => {
 }
 
 
-const replaceToken = (value: string, start: number, end: number, text: string) => (
-    `${ value.slice (0, start) }${ text }${ value.slice (end) }`)
+const replaceToken = (value: string, start: number, end: number, text: string) =>
+    `${ value.slice (0, start) }${ text }${ value.slice (end) }`
 
 
 type Props = {
@@ -38,16 +38,17 @@ export default (({ tags, setTags }: Props) => {
   const ref = useRef<HTMLTextAreaElement> (null)
 
   const [bounds, setBounds] = useState<{ start: number; end: number }> ({ start: 0, end: 0 })
+  const [focused, setFocused] = useState (false)
   const [suggestions, setSuggestions] = useState<Tag[]> ([])
   const [suggestionsVsbl, setSuggestionsVsbl] = useState (false)
 
   const handleTagSelect = (tag: Tag) => {
     setSuggestionsVsbl (false)
     const textarea = ref.current!
-    const newValue = replaceToken (tags, bounds.start, bounds.end, tag.name)
+    const newValue = replaceToken (tags, bounds.start, bounds.end, tag.name + ' ')
     setTags (newValue)
     requestAnimationFrame (async () => {
-      const p = bounds.start + tag.name.length
+      const p = bounds.start + tag.name.length + 1
       textarea.selectionStart = textarea.selectionEnd = p
       textarea.focus ()
       await recompute (p, newValue)
@@ -56,14 +57,21 @@ export default (({ tags, setTags }: Props) => {
 
   const recompute = async (pos: number, v: string = tags) => {
     const { start, end, token } = getTokenAt (v, pos)
+    if (!(token.trim ()))
+      {
+	setSuggestionsVsbl (false)
+	return
+      }
+
     setBounds ({ start, end })
-    const data = await apiGet<Tag[]> ('/tags/autocomplete', { params: { q: token } })
+
+    const data = await apiGet<Tag[]> ('/tags/autocomplete', { params: { q: token, nico: '0' } })
     setSuggestions (data.filter (t => t.postCount > 0))
     setSuggestionsVsbl (suggestions.length > 0)
   }
 
   return (
-      <div>
+      <div className="relative w-full">
 	<Label>タグ</Label>
 	<TextArea
 	    ref={ref}
@@ -72,11 +80,20 @@ export default (({ tags, setTags }: Props) => {
 	    onSelect={async (ev: SyntheticEvent<HTMLTextAreaElement>) => {
 	      const pos = (ev.target as HTMLTextAreaElement).selectionStart
 	      await recompute (pos)
+	    }}
+	    onFocus={() => {
+	      setFocused (true)
+	    }}
+	    onBlur={() => {
+	      setFocused (false)
+	      setSuggestionsVsbl (false)
 	    }}/>
-	<TagSearchBox suggestions={suggestionsVsbl && suggestions.length
-				   ? suggestions
-				   : [] as Tag[]}
-		      activeIndex={-1}
-		      onSelect={handleTagSelect}/>
+	{focused && (
+	    <TagSearchBox
+		suggestions={suggestionsVsbl && suggestions.length > 0
+			     ? suggestions
+			     : [] as Tag[]}
+		activeIndex={-1}
+		onSelect={handleTagSelect}/>)}
       </div>)
 }) satisfies FC<Props>
diff --git a/frontend/src/lib/utils.ts b/frontend/src/lib/utils.ts
index 3a281f6..871bdd6 100644
--- a/frontend/src/lib/utils.ts
+++ b/frontend/src/lib/utils.ts
@@ -1,6 +1,7 @@
-import { clsx, type ClassValue } from 'clsx'
+import { clsx } from 'clsx'
 import { twMerge } from 'tailwind-merge'
 
-export function cn (...inputs: ClassValue[]) {
-  return twMerge(clsx(...inputs))
-}
+import type { ClassValue } from 'clsx'
+
+
+export const cn = (...inputs: ClassValue[]) => twMerge (clsx (...inputs))