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Chainsmoker Cat's 'Anti-Smoking Senpai' Is Also a Monster, Fans Say

『ヤニねこ』嫌煙家の先輩、まさかの怪物枠に日本のファン反応

Chainsmoker Cat's 'Anti-Smoking Senpai' Is Also a Monster, Fans Say

Chainsmoker Cat's official YouTube channel posted a short clip finishing off a side character billed as the show's "anti-smoking senpai" — and instead of playing as a clean moral contrast to the chain-smoking heroine, the reveal has fans calling him a second monster in the same body of work.

Across 504 comments, the most-liked reaction (3,184 likes) singles out one line from the clip — that secondhand smoke is basically assault — as its best joke, while another highly-liked comment (1,118 likes) points out that without the smoking gimmick, the show's own protagonist would just be an ordinary cat.

This titleJapanese reactions to Chainsmoker CatRead all 28 roundups on the title page
YouTube · TVアニメ『ヤニねこ』公式【ハメちゃんねる】

Chainsmoker Cat's official YouTube channel posted a short clip this week finishing off a side character the show bills as its "anti-smoking senpai" — a foil meant to stand opposite the chain-smoking heroine. The joke, going by the 504 comments underneath it, is that the contrast didn't land the way anyone expected: instead of a wholesome counterweight who makes the smoking heroine look worse by comparison, fans have decided the show just introduced a second monster wearing a completely different theme. It's the kind of bit that only works if the audience already trusts the show to undercut its own setup, and this comment section clearly does.

🚬 "I'm a deterrent, you know."

🚬「私は抑止力なのだよ。」

@櫛森日和子39 likes

That's his own self-introduction, quoted straight back by a commenter, and the reaction underneath it is immediate — and not the kind of impressed the character was probably going for.

"A monster has been unleashed onto the world..."

「バケモノが世に放たれた…」

@うどんくん04061,123 likes
Just changed direction — still a 100% pure monster.

方向性を変えただけの純度100%の化け物

@六枚メンコ269 likes

Once the thread has decided he's a monster, it doesn't take long for someone to drag real-world law into the bit — and the joke that gets the most traction is aimed at the clip's own dialogue.

"Secondhand smoke is basically assault" is such a quietly perfect line.

副流煙は傷害罪とかいうパワーワードが地味にツボ

@黒にゃがお3,184 likes
Honestly, it does make you wonder why secondhand smoke isn't literally treated as assault.

実際なんで傷害罪じゃないのか疑問ではある

@gkad-eb4vd80 likes

Plenty of comments compliment the delivery of that one line specifically, and a few even reach for a comparison to how bluntly certain corners of the Japanese internet talk.

I love how naturally he throws out blunt disses, like some guy answering questions on Yahoo Chiebukuro.

ナチュラルな知恵袋民直球ディスほんとすき

@コープスボンスピマン1,251 likes

But the pile-on doesn't stop at the new character — it loops back around to the show's own premise, too.

If Chainsmoker Cat stopped smoking, she'd just be a regular cat lol

ヤニねこがヤニ吸わんくなったらただのねこで草

@warabimoti751,118 likes
Yaku casually manhandling Yanko every few scenes, lol

ちょくちょくヤニ子の扱い雑なヤク草

@みそ-e2c652 likes

Even the show's usual comic relief gets pulled into the discussion, with fans arguing about which register actually gets the biggest laughs.

By the end of the thread, the show's own cast gets the last word — and it's a line that sums up the whole joke better than any comment could.

Yaku: "Turns out senpai was senpai even without the nicotine~"

ヤクねこ「ヤニが無くても先輩は先輩でした~」

@児玉直哉27 likes

That's the whole bit in one sentence: the show swapped the vice for a virtue and got the exact same character back. Chainsmoker Cat didn't need to give its heroine a foil so much as a mirror, and the comment section noticed immediately — the running joke isn't really about smoking at all anymore, it's about how every character this show introduces ends up on the same unhinged spectrum, habit or no habit.

FAQ

Who is the "anti-smoking senpai" in Chainsmoker Cat?
He's a side character introduced in this clip as a foil to the show's chain-smoking heroine — someone who describes himself as "a deterrent" against smoking. Commenters note that, despite the opposite theme, he comes across as just as unhinged as the character he's supposed to balance out.
Why are fans comparing him to a monster?
A highly-liked comment (1,123 likes) reacts to his introduction with "a monster has been unleashed onto the world," and another highly-liked comment (269 likes) jokes that he's "a 100%-pure monster who just changed direction" — meaning the show swapped the theme (anti-smoking instead of smoking) but kept the same exaggerated personality type.
What's the joke about secondhand smoke?
The most-liked comment on the video (3,184 likes) reacts to a line in the clip calling secondhand smoke "basically assault," calling it a perfectly delivered punchline. Another commenter (80 likes) adds that it's a fair point, since real-world secondhand smoke exposure isn't legally treated as assault — which is part of the joke.
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