There's a Reason My Boyfriend Married My Sister Manga Reviews

Sharisse Lee

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Jan 15, 2024 (PST) | Total Reviews: 21

I hate the sister sooooo much

I wish you would die, honestly she needs to go, idc if she apologizes and realizes what’s she done. Like you deserved everything that happened to you.

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Matcha Mochi

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Oct 26, 2024 (PST) | Total Reviews: 3

So much suspense

Never felt so many different feelings in each chapter!! The ups and downs. Makes me angry and also sympathize with characters. Can't wait to see what the final out is with Yuuma and Aiko.

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Oct 10, 2024 (PST) | Total Reviews: 1

the sister is sooo terrible i hope she gets back

This review contains spoilers. the sister literally is the worst character ever, and her boyfriend isn’t helping like hes literally a minion in her game i hope he steps it up

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(2)

Rose Holder

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Aug 12, 2025 (PST) | Total Reviews: 3

Not sure I can finish

This review contains spoilers. This one’s frustrating. So much of the story has me screaming “just go to the police!” The main character has no spine, and even when she ‘stands up for herself’, she doesn’t explain anything to anyone about her harassment.
And the whole lynchpin that’s keeping the ex boyfriend in the sister’s grip is pathetic. She’s not holding anything over his head. She threatened to kill the sister in a way that could have been easily stopped, or at the very least, reported after the fact, but the bf did nothing.

I also greatly dislike the idea that someone who was sexually abused and abandoned as a child would grow up to be basically a jealous sociopath who would choose to inflict the same kind of pain on someone else.

All around, needless conflict, spineless characters, and a bad message about victims of childhood abuse.

…It’s also not really a thriller, there’s no mystery or suspense, it’s just chapter after chapter of kicking the MC.

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(2)

Posted by Readers in Japan

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Apr 24, 2026 (PST) | Translate to English

とても良い

very good

最初は典型的かなーと思ったけど話の流れがハラハラで見るのも進んじゃって最新刊まで課金しちゃいました！おもしろいです！

At first, I thought it was typical, but the flow of the story progressed even though I watched it in jarring, so I ended up charging for the latest edition! It's interesting!

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Dec 16, 2025 (PST) | Translate to English

お姉ちゃん、、

older sister...

This review contains spoilers. 愛子が幸せになって良かった♡♡次はお姉ちゃんのお話になったけど、どうなるんだろう、、色々ツケが回ってきてる感じです。。愛子と和解するのかな？

This review contains spoilers. I'm glad Aiko is happy ♡♡ The next one was about her older sister, but I wonder what's going to happen... I feel like a lot of money is going around... Will she make peace with Aiko?

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Oct 14, 2025 (PST) | Translate to English

かわいそうだけど…

that's a pity, but...

姉が妹にして来た事を考えたら苦しめられてもしょうがないって思う…姉も苦しめられてやっと人の気持ちがわかるんちゃう？遅いけど…

When I think about what my older sister made me my younger sister, I think there's no point in being tormented... can you finally understand people's feelings after my older sister is also tormented? it's late, but...

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Apr 28, 2025 (PST) | Translate to English

面白い！！サスペンス系でハマったのは初✨

interesting!! This is the first time I'm addicted to suspense ✨

This review contains spoilers. まず主人公の愛子ちゃんがとても可愛いっ！！見る限り、結局欲しいもの我慢しているのはお姉さんではなく愛子ちゃんなのでは…？と思ってしまいました！！洋服の色も結局お姉さんに譲り、スイーツ？も結局、愛子ちゃんは苺を選ばなかった。。お姉さん性格悪い、、、けど愛子ちゃんのお父さんに性的被害受けてたのは可哀想すぎる、、、

This review contains spoilers. First of all, the main character, Aiko, is so cute!! As far as I can see, isn't it Aiko who puts up with what she wants after all, not her older sister...? That made me think!! I ended up handing over the color of my clothes to my older sister, sweets? But in the end, Aiko didn't choose strawberries.. The older sister has a bad personality... but it's too pathetic that Aiko was sexually victimized by her father...

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Oct 11, 2024 (PST) | Translate to English

続きが気になります！

I'm curious about the continuation!

This review contains spoilers. 姉にやられっぱなしなので、愛子の逆襲のターンがそろそろ欲しいかなーって思います。元彼の優馬は頼りにならないので、てか愛子の足引っ張ってる（笑全然違う人と愛子は結婚したほうがいいんじゃないかな？って思います。というか、姉とは早く縁を切って最後は愛子が幸せになって欲しいです。（優馬はダメ。イライラします）愛子は優馬と復縁なんてしないでね?姉に脅されて結婚とかばかじゃん!全然、愛子のこと守れてないし、愛子を傷付けているだけですね。姉と関係を持った優馬と復縁なんて絶対ムリ！！あと店長、殺人未遂なのに何故逮捕されない？優馬と優馬の父親、姉の紗栄子にはこれから地獄を見てほしい！これから愛子のギャフンと劇が見たいので星を5個にしました。希望をこめて。

This review contains spoilers. My sister keeps getting beat up, so I think I want Aiko's Turn to Strike Back soon. Her former boyfriend, Yuma, is unreliable, so he's holding Aiko back (lol wouldn't it be better for Aiko to marry someone completely different? I think so. Or rather, I want Aiko to break up quickly with my sister and be happy at the end. (Yuma is no good. (It's frustrating) Aiko won't get back together with Yuma, right? it's stupid to get married after being threatened by my sister! You haven't been able to protect Aiko at all, and you're just hurting Aiko. It's absolutely impossible to get back together with Yuma, who had a relationship with her sister!! Also, why wasn't the store manager arrested even though it was an attempted murder? I want Yuma, Yuma's father, and older sister Saeko to see hell from now on! I want to watch the play with Aiko's Gafun from now on, so I set it to 5 stars. with hope.

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Aug 18, 2024 (PST) | Translate to English

近親の怒りは…

Close relatives' anger is...

お姉さんが苦しんでるのは分からなくない。それだけ辛い出来事であり、誰にもわかってもらえずだったから。とは言えども、妹を陥れることは、人としてやってはいけないと思う。最後は、愛子さんが幸せになります様に。

I don't understand that my sister is suffering. It was such a painful event, and no one understood it. Having said that, I don't think we should fall for our sister as a human being. At the end, I hope Aiko will be happy.

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Posted by Readers in Japan

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Apr 23, 2024 (PST) | Translate to English

姉怖すぎ

My sister is too scared

This review contains spoilers. ストーリーは面白いけど、内容が内容過ぎて漫画でも怖すぎる。絵とかもステキだから読むことは止められないけど、読み始める前にちょっと気合を入れてる自分がいます…

This review contains spoilers. The story is interesting, but the content is so much that even comics are too scary. The pictures are wonderful, so I can't stop reading them, but I feel a little excited before I start reading...

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Posted by Readers in Japan

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Nov 12, 2023 (PST) | Translate to English

怖い。

I'm scared.

本当にある事なので怖さを感じました。優しすぎる男DV男は、女にとって敵です。相談する人がいて彼女は幸せな方かもしれないけど本当の怖さを、二人とも知らなさすぎ、、どうなって行くのだろう、、

I felt scared because it really happened. DV men who are too kind are enemies of women. She may be happy to have someone to talk to, but they both don't know the real fear... what will happen...

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Posted by Readers in Japan

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Oct 21, 2023 (PST) | Translate to English

サスペンスぅー

suspense

なかなかなサスペンス。いっちゃってる感覚が猟奇的。ただ、スイッチが入ったときのタイミングがちょっと謎。

Quite a bit of suspense. The feeling of going crazy is bizarre. However, the timing when the switch is turned on is a bit of a mystery.

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Posted by Readers in Japan

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Oct 05, 2023 (PST) | Translate to English

こ、怖すぎる！

this is too scary!

This review contains spoilers. 刺されて目が覚めたら彼氏が姉と結婚してるって、設定だけでも怖すぎる。しかも結婚を伝える姉の顔がなんとも性悪な感じが出ていて怖すぎ。それにしても彼氏は姉に乗り換えておいて、よく捨てた妹の前に出られるもんだ。他の同僚に代わってもらえなかったのか。それとも絶望に突き落とされる妹を見たかった？だとしたらまたまた怖すぎる。まだ1巻しか読んでないけど、彼氏には何か深いわけがあって仕方なく姉と結婚した、みたい展開にならんものかね。でないと妹ちゃんが不憫や…。

This review contains spoilers. When I woke up after being stabbed, my boyfriend was married to my sister, and the setting alone was too scary. What's more, the face of my older sister telling her about her marriage has such a vile feeling that it's too scary. Even so, my boyfriend changed over to my older sister, and I was able to show up in front of my younger sister who often abandoned her. Couldn't you have been replaced by another colleague? Or did you just want to see my sister being thrown into despair? If that's the case, I'm too scared again. I've only read volume 1 yet, but I wonder if my boyfriend had some deep reason and had no choice but to marry my sister. Otherwise, my little sister would feel sorry...

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Sep 29, 2023 (PST) | Translate to English

本当に実姉？

is she really my real sister?

This review contains spoilers. 実姉の仕業だったとは．．．。何の恨みがあって、実妹に嫌がらせをするのだろうと考えさせられる作品です。毎話読むのが待ち遠しいです。

This review contains spoilers. I heard that my real sister did it... It's a work that makes me wonder what kind of grudge they have and harass their real sister. I can't wait to read every episode.

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Posted by Readers in Japan

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Jul 22, 2023 (PST) | Translate to English

いや〜

nooo~

まだ途中までしか読んでいませんがお姉さんの性格の悪さに嫌気がします。自分が嫌な育て方されたからって妹のせいにするのはゆるせない！

I've only read it halfway, but I'm disgusted by the older sister's bad personality. I can't forgive blaming my sister for being raised in a bad way!

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Posted by Readers in Japan

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Jun 09, 2023 (PST) | Translate to English

凄く面白い！テンポも早くて一気読み！

Very interesting! The tempo was fast and I read it all at once!

This review contains spoilers. ジェットコースター展開で最高！一気に6卷まで読んでしまった。愛、妬み、嫉妬、過去のトラウマ等ドロドロの昼ドラみたい(笑) 悪いのは誰かわかってるから、やられた分を少しずつ追い詰めて、早くとびきりの制裁を与えて欲しい！社会的に抹殺希望！ラストはハッピーエンドでお願いします！ 9巻まで読みました。姉紗栄子がなぜ歪んだ性格になったのか、理由はわかったけど妹に関係ないのに僻み根性で狂気じみたことばかりやってる事が許せない。新しく彼氏になったストーカーまで姉が関わってるし、今度は優馬と子供を作ろうとしてるし、直ぐに読み終えてしまって物足らない。流石に主人公の性格にもイライラする点あり。もっと強くなるべき。あと優馬も何で姉の言うことばかり聞いてるんだろ。脅かされても愛子の事守れるんじゃないかな。姉が精神的にいっちゃってるからって結婚までするなんておかしい。早く続きが読みたい！姉に社会的な制裁を！姉が早く破滅するとこ見たい！14巻まで読みました。姉の思い通りにいっててイライラ。義父の殺害に関与してるしやってる事が犯罪だらけ、早く姉に絶望を味わせたい。追記最新版 19巻まで読みました。とにかくまだ姉が好き放題にしてるのが許せない。早く世の中に悪事がバレて死ぬまで誰にも相手にされず罪を償い苦しめ。絶対に死んで終わるエンディングであって欲しくない。そして愛子も実は生きてて優馬と幸せになって欲しい。

This review contains spoilers. Great rollercoaster development! I read up to 6 volumes at once. Love, jealousy, past trauma, etc. It's like a muddy daytime drama (laughs) I know who is bad, so I want them to hunt down what has been done little by little and give them extreme sanctions as soon as possible! Hope for social elimination! Please have a happy ending at the end! I've read up to 9 volumes. I understand why my older sister Saeko had a distorted personality, but I can't forgive her for only doing insane things due to her secluded guts even though she has nothing to do with her younger sister. My older sister is involved even with the stalker who became her new boyfriend, and now I'm trying to have children with Yuma, and I finished reading it right away, so it's not enough. As a matter of fact, the main character's personality is also frustrating. We should get stronger. Also, why does Yuma only listen to what her sister says. I wonder if Aiko will be able to protect her even if she is threatened. It's strange that I even got married because my sister is mentally upset. I want to read more soon! Social sanctions for my sister! I want to see my sister fall to ruin soon! I've read up to 14 volumes. It's frustrating that my sister is going the way she wants it. I'm involved in the murder of my father-in-law, and what I'm doing is full of crimes, so I want my sister to experience hopelessness as soon as possible. Postscript I've read up to 19 volumes of the latest edition. Anyway, I can't forgive my sister for still doing whatever she wants. They atone for their sins without being dealt with by anyone until they soon discovered the evil in the world and died. I definitely don't want the ending to end in death. Also, I want Aiko to actually live and be happy with Yuma.

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Jun 08, 2023 (PST) | Translate to English

こわっ

I'm scared

ちょっと読むだけのつもりがハマってしまいました。少しずつ綻びみたいなものが解けていくので読んでいてやっぱりそうだよね、って思うところとかえっそんな事になってたの？って意外なところとか人の嫉妬、妬みって怖いなって?きっと本当のこと、真実に辿り着くまでにはまだもう少しかかると思うので飽きなく読める事を期待しています！

I was addicted to just reading it. Things that seem to break up little by little are unraveling, so when you're reading it, you think that's true after all, huh? are you afraid of unexpected things or people's jealousy and jealousy? I'm sure it will take a little longer to get to the truth, so I hope you'll read it without getting tired of it!

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May 22, 2023 (PST) | Translate to English

気になる

worrisome

This review contains spoilers. 続きが本当に気になる自分が愛の立場になったらと考えると虫唾が走る､､､どうか愛さん報われてほしい泣彼氏も彼氏だ！！ムッ

This review contains spoilers. I'm really worried about the continuation when I think about myself being in a position of love... the crying boyfriend I want Ai-san to be rewarded for is also my boyfriend!! Mmm

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Apr 29, 2023 (PST) | Translate to English

ドロドロ

mush

This review contains spoilers. まさかの姉の裏切りが辛すぎるけど、読むのを止められない。包丁で刺されて、幸い一命を取り留めたけど、殺すつもりだったの⁉️幾らなんでも酷くない？妹には、最後は幸せになって欲しい。

This review contains spoilers. My Sister's Betrayal is so painful, but I can't stop reading it. I was stabbed with a kitchen knife, and luckily I saved my life, but I meant to kill him ⁉️ Isn't that terrible at any cost? I want my sister to be happy in the end.

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