"My Stepmother and Stepsisters Aren't Wicked": Japanese Fans on the Summer 2026 Sleeper Hit Nobody Saw Coming
『いびってこない義母と義姉』隠れた優良作に日本ファンの反応

“Voice actress Kujira is way too perfect a fit for Mamy lol”
マミーCVくじらさんがピッタリすぎるwww
A Japanese anime commentary channel picked up My Stepmother and Stepsisters Aren't Wicked as a show he knew nothing about going in — and across the comment section, the single most-liked reaction (177 likes) is simply that voice actress Kujira is a perfect fit for the terrifying-but-secretly-sweet stepmother, Mamy. From there fans build out exactly why this quiet, gimmick-premise show is working: a cast where literally every character is a good person, real daughters and cousins alike genuinely terrified of Mamy despite knowing she's harmless, and a recurring joke that voice actress Kuwashima Houko's characters have a habit of dying in other shows. Several commenters push back on complaints that the formula is repetitive, arguing that's simply the point — not every story needs a slow multi-cour burn to be worth watching. It closes with a comment that doubles as a fan confession: after having their heart worn down by all the darker, messier shows dominating this season, this is the healing anime they didn't know they needed.
Scroll while you watch
Japanese fan reactions (excerpted from 193)
This reminds me of a certain landlady from another show 😮
どこぞの大家の婆さんを思い浮かべる😮
— @絶望世界13 likesSame, ever since I read the original manga I'd thought nobody but Kujira could play this role 😊
自分も原作を読んでいた時から、この役はくじらさんしかいないと思っていました😊
— @ぽっかぽか12 likesWe need more shows where everyone just ends up happy.
みんなが幸せな作品もっと増えてくれ
— @roicha0C58 likesDifferent genre maybe, but it's got that same energy as another gimmicky underdog hit — it never leaves you feeling bad, and you just want to watch the next episode every time.
ジャンル違うかもだけど、姫様拷問の時間ですみたいな感じで全く嫌な気持ちにならずに毎回見たくなる。
— @にゃんこ大先生-y2t67 likesLiterally every character is a good person. It's just pure fun to watch. It's nice to have a show like this once in a while!
登場人物全員良い人。 見ててただひたすら楽しい。 こういうの、たまには良いよね!
— @たきさんM124 likesSeriously, hats off to the production team for casting Kujira. This show is the embodiment of 'this is exactly what we needed.'
やっぱ、くじらさんを抜擢した製作陣に拍手を送りたい。 正に「こういうのでいい」を体現した作品。
— @茂木伸夫-t8h60 likesThe 'repetitive formula' criticism is fair enough, but factoring that in, this is a show you enjoy for how cute the girls are and how funny the stepmom is.
ワンパターン展開の批判はごもっとも それを加味して女の子の可愛さと義母の面白さを楽しむ作品
— @PearHunt37564103 likesHer own biological daughters Arisa and Marika being terrified of Mamy every single episode kills me every time.
実子のありさとまりかが、毎回マミーにビビってんのが死ぬほど笑える。
— @chigyo-drum54 likesTheir cousin is scared stiff too — apparently even knowing her personality doesn't make her any less terrifying. If anything, the protagonist gradually getting used to it is the actually abnormal one.
従姉妹もひたすらビビってるからね 性格分かってても怖いものは怖いらしい どっちかというとある程度慣れてくる主人公が異常らしい
— @シルバ-k1k11 likesJust like that other show this season, this is an anime where the 'Kuwashima Houko's characters always die' legend threatens to flare up again.
ジャードゥーガル同様に桑島法子死亡伝説が火を吹くアニメ
— @詫侘錆70 likesThe older sister, voiced by Serizawa Yu, is just so quintessentially 'Serizawa Yu' and I love it lol
姉の芹澤優ちゃんが、ザ・芹澤優ちゃんって感じで好きw
— @ころん-32431 likesThis is exactly the kind of show that says 'this is all we need.' Shows you can enjoy without thinking too hard are important.
まさにこういうのでいいんだよって作品ですね。 何も考えず楽しめる作品は大事です。
— @柾木愛造-f2n52 likesI'd been thinking Serizawa Yu's been on a roll lately, and Marika's 'HAAAAH?!' line is too good, I can't take it.
最近芹澤優さんいいなって思ってたので、まりかの「はあ〜〜〜!?」が好き過ぎてたまらない。
— @しーぽん-n8m18 likesHonestly, 'Kujira-san' is the real protagonist here ❤❤❤
むしろ、「くじらさん」が主人公❤❤❤
— @浩司-s9h28 likesGlad I still have the kind of taste that lets me genuinely enjoy this show.
自分がこの作品を好きだと思える感性で良かった
— @soram-j8o38 likesKujira's having a huge season! That 'scary intimidation → sudden kindness' switch is shaping up to be the winning formula. So healing~
今期はくじらさん大活躍!凄んでからの優しさムーブが鉄板になりそうです!癒し♪
— @ぼっちちゃん013 likesI'd only seen the very start of the manga on my timeline, and honestly, 'wait, they're stretching a one-note joke into a full cour?!' is exactly what got me curious enough to watch. It's carefully made and genuinely fun... though I'm both excited and a little worried about how they'll expand it from here.
原作の序盤だけTLで見たことあったけど、まさに「出落ちネタを1クールやるの?!」という点が興味を引いてアニメを見た。 すごくていねいに作られてて面白かった。…けどここからどう広げて続けるのか楽しみであり心配でもある。
— @o.j.u18 likes'Repetitive'? That's called 'stylistic beauty.' Not every story has to be a slow, multi-cour burn to be worth telling.
ワンパターン? 様式美っていうんだよ 1クール2クールかけて進めるだけがお話じゃない
— @sign1535 likesOnce the story shifts focus to school life, the tone changes a bit too — the kindness she's received starts getting passed forward to someone else, and you actually get to see Miharu grow.
学園生活にスポットが当たり出すとまたちょっと風向きが変わってきます。 優しくされた分、その優しさを別の誰かへお裾分け。 美冶の成長が見れるようになってきます。
— @GHOST-uf9cs20 likesThe teaser PV wrecked me lol, casting Kujira in this exact setup is just too much firepower...
ティザーPVの破壊力でやられましたよw このシチュでCVくじらさんは破壊力ありすぎる⋯
— @bashiny3 likesHaven't watched the anime yet, but in the manga the sound effects whenever Mamy shows up are always intense — that's what I'm most looking forward to seeing translated.
まだアニメ見てないんだけど、漫画だとマミィが出てくる時の擬音が毎回すごいんだけどアニメでどうなってるのかが1番楽しみ
— @くらっしー-c8r6 likesI love this kind of 'everyone ends up happy' story, so this was one I'd been looking forward to before it even aired. Everyone in the Kozo family is a good person, but I'm curious about the still-unseen father who abandoned Miharu and her mother.
こういう幸せになってくれる系の話は好きなので放送前から楽しみにしていた作品の一つでした 鴻蔵家の人たちは良い人ばかりですが美冶達母子を放置してまだ出てきていない父親の存在も気になります
— @reito58695 likesAfter my heart got worn down by all the smoking-cat drama and hometown-scandal shows this season, this is the god-tier healing anime I needed.
ヤニだの地元だので荒んだ心を優しく癒してくれる神アニメ
— @luck10og311 likes
FAQ
- What is My Stepmother and Stepsisters Aren't Wicked about?
- It's a summer 2026 anime centered on Miharu Kozo living with a stepmother, Mamy, who looks and sounds terrifying but turns out to be genuinely kind — commenters describe the whole cast as made up entirely of good-hearted people.
- Why do fans keep bringing up voice actress Kujira?
- The top comment (177 likes) and several others praise Kujira's casting as the stepmother Mamy as a perfect match, with one commenter noting they'd thought so since reading the original manga.
- How do fans respond to criticism that the show's formula is repetitive?
- One highly-liked comment reframes the repeated pattern as "stylistic beauty" rather than a flaw, arguing that not every story needs to be a slow, multi-cour burn to be enjoyable.
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