Is It Rude to Recline Your Seat on the Shinkansen? "Not 'May I Recline?' — 'I'm Reclining Now'": an 824-Comment Thread

What Japanese people said — picked from the top 200 of 824 comments

• If you ask "is it OK if I recline?", they can answer no. "I'm reclining now" is the better manners, I think. And having it come back out of nowhere makes people jump.

  「倒して良いですか？」だとNoって答えられるから「倒しますね」がマナー的に良いと思う いきなりだとうわってなるし

  — @ebimaru_ch214 likes

• Not "may I recline?" — "I'm reclining now" is enough.

  ｢倒していいですか？｣じゃなくて ｢倒しますね｣でいいと思う。

  — @らぷかぼす136 likes

• I once had the tray table down with a coffee on it and the seat in front came back with no warning — the coffee went everywhere. I'm not saying you can't recline. I just wanted a word first.

  テーブルを開いて コーヒーを置いていた時にいきなり リクライニングされてコーヒーがこぼれたことがある 倒しちゃいけないとは言わないのでせめて一声かけて欲しかった

  — @リバティベル-y7o192 likes

• If someone has a bento or a drink out, a seat coming back suddenly can knock it over. That's what the word is for — a signal, so nothing gets spilled.

  弁当や飲み物とかがあった場合急に倒されたら転倒する可能性があるから、合図を送って事故らないようにするためやと思う

  — @うあ-q5e62 likes

• I asked once and got a flat "absolutely not!" from an older woman, so ever since then I recline without saying anything. Hers included — I didn't hold back.

  聞いておばはんに「絶対ダメ！」って言われたからそれ以来何も言わずに倒してる、もちろんそのおばはんの時も容赦なく倒した

  — @にこる-z8u31 likes

• If they're the type to refuse when asked, then reclining in silence is how you end up in a fight — so asking is still the best move, isn't it? Lately I notice people reasoning about whether something is an obligation rather than what's simply decent. Doesn't that strike you as off?

  倒していいか聞いて断る奴なら黙って倒したら喧嘩になるから、やはり聞くのがベストじゃね？ 最近、常識やモラルじゃなく、「義務かどうか」などの理屈で考える人が多く感じるけど、何かおかしくないか。

  — @いはらかずや69 likes

• Having it dropped on me with nothing said does annoy me a little, but if there's a "is this OK?" / "go ahead" exchange, it barely bothers me at all.

  なんも言わずにいきなり下げられたらちょっと腹立つけど、「いいですか？」「いいですよ」のやりとりがあるだけでそこまで不快には思わない

  — @ajajajajajaj55918 likes

• Manners are the consideration that keeps things running smoothly. They are a different thing from an obligation in the first place — the two shouldn't be argued as if they were the same.

  マナーとは円滑に物事を進めるための気配りのことで、そもそも義務とは別のもの。並べて語るものではない。

  — @よっしー-z6r47 likes

• Unless you slam it back, the tray table's angle doesn't change — they're built that way. Honestly, on a seat with a recline function, the space you get when it's reclined is what your fare paid for, so I don't think you need permission or even a word. It's your seat. Use it.

  勢いよく倒さない限り、テーブルの角度が変わることはないようにできてますよ とんでもない勢いで倒さない限り、普通にゆっくり倒す分にはテーブルは影響しませんよね 正直リクライニング機能付で倒したスペースまでが座席料金なので、後ろに許可や声がけは必要ないと思う、なんなら前の人に聞かれるて答えるのもめんどくさいので自分の席なんだから堂々と使ってって思う

  — @hideeejp477910 likes

• It's a seat with a recline function in the first place. Nobody has a right to refuse and tell you that you mustn't use it.

  そもそも倒す機能があるものだし、倒しちゃいけないなんて拒否する権利はないと思う

  — @RE桜10 likes

• Do people really need a manual telling them "it has to be done this way" even for something like this?

  なんか、そういうことすら『こうでなきゃいけない』ってマニュアル作らんと判断できないのか

  — @あくじら212 likes

• The railway companies don't want to step in and be held responsible for whatever they say, I imagine, lol.

  鉄道会社も下手に踏み込んだ発言して責任持ちたくないんだろうなw

  — @山田太郎-t4m7k209 likes

• "Asking is the polite thing" and "you're under no obligation to ask" — both are sound. In the end it comes down to the person. They may as well drop the recline function altogether.

  聞くのがマナー 聞く義務はない どっちも正論ですね。そして結局その人次第。 もうリクライニング機能無くせばいいと思う。

  — @Tブラン-z6k21 likes

• There's a bus company that has every seat pre-reclined. Then putting one back up for someone becomes the thing you get thanked for — lovely idea.

  あるバス会社は全席あらかじめ倒してある 起こしてくれたら『ありがとう』になる素敵な施策

  — @vanvan434218 likes

• I go with "I'm reclining" rather than "may I recline?". You don't need permission from the person behind, but you should declare it.

  「倒していいですか？」じゃなくて「倒します」っていうようにしてる。 後ろの人の許可は要らないけど宣言はした方がいいと思う。

  — @fifa-camp-ps-air42 likes

• I only take it back as far as it isn't a problem for anyone.

  問題ない範囲でしかたおさない。

  — @ともやん-s1c29 likes

• As a rule I don't recline at all. I will if there's nobody behind me. Otherwise, keep it to an angle you wouldn't mind having done to you.

  基本私は倒さない。後ろに人がいない時は倒すけど。自分がされても気にならない程度の倒す幅にしたらいいと思います。

  — @キレねん子ウサびっち10 likes

Do you have to ask before reclining your seat on the Shinkansen?

No operator requires it. JR West told VAGUE that the space a recline needs is shared by the two seats and that riders should accommodate each other; no rule says you must ask, and none says you may not recline (as of mid-2026). In the comments the practice is to tell the person, not ask them — the most-liked comment in the thread (239 likes) says exactly that.

Sources: vague.style — checked 2026-08-24

What do Japanese people say when they recline their seat?

"Taoshimasu ne" (倒しますね) — "I'm reclining now" — usually with a "sumimasen" in front of it. Thirty-four of the 200 top comments use that wording. "Taoshite ii desu ka?" (may I recline?) is treated as the weaker move, because it invites a refusal: 214 likes for "if you ask, they can say no."

Is it rude if the person in front reclines into you?

The objection in this thread is not the recline, it is the suddenness. The most-liked complaint (192 likes) is a coffee tipped over by a seat that came back unannounced. Several commenters argue the reclined space is part of what the fare bought and that nobody has a right to refuse it (10 likes each), so tray-table drinks are the real risk to manage.

What about reclining on a Japanese highway bus?

Buses lean more towards a word first: Keio Bus's own highway-bus FAQ asks riders to speak to the person behind before reclining (as of mid-2026), which is stronger than anything the railways say. One commenter (18 likes) praises a bus company that leaves every seat pre-reclined, so raising it for someone becomes the thing you get thanked for.

Sources: highwaybus.com — checked 2026-08-24

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