Rating
I Suddenly Have An “older” Sister! Average 2.3 / 5 out of 27
Alternative
Kyuu ni Ane ga Dekimashite!, Kyuuni Ane ga Dekimashite!, 急に姉ができまして！
Author(s)
Artist(s)
Genre(s)
Type
Manga
Summary
A brief description of the manga I Suddenly Have An “older” Sister!
A young “older” sister suddenly appears before me…?! A love-comedy of “irregular” siblings living together. ♡
Asami, a beautiful but mysterious girl appears before Ryosuke, the protagonist who is in his thirties, and claims that she is his sister. She is the sister of Ryosuke’s brother’s wife, in other words, she is somewhat Ryosuke’s sister… Aiming to be the ideal older sister, she decides to engage in extreme big sisterly acts!
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- Chapter 21 09.08.2025
- Chapter 20 25.07.2025
- Chapter 19 10.07.2025
- Chapter 18 27.06.2025
- Chapter 17 27.06.2025
- Chapter 16 28.05.2025
- Chapter 15 08.05.2025
- Chapter 14 04.01.2024
- Chapter 13 04.01.2024
- Chapter 12 04.01.2024
- Chapter 11 04.01.2024
- Chapter 10 04.01.2024
- Chapter 9 04.01.2024
- Chapter 8 04.01.2024
- Chapter 7 04.01.2024
- Chapter 6 04.01.2024
- Chapter 5 04.01.2024
- Chapter 4 04.01.2024
- Chapter 3 04.01.2024
- Chapter 2 04.01.2024
- Chapter 1 04.01.2024
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41 comments
Cosmic clan
10 months ago
to summarize..?
brother sends his sister of his wife to the MC. so he could marry her..
The FMC is 19.. and the MC is in her 30s.
this shit sounds really confusing..
Trolls
10 months ago
ok so for all the crazies here if she was 10 and he was 19 yes indeed it’s a big problem.
here it’s a girl above 18. (my dad is 10 years older than my mom no one ever found that problematic.)
Even if 21 is majority in japan it’s for legal purpose, you can drive a car and kill people but not bang a older man wtf ?
Also, she’s fully aware of what she’s doing and he’s fully aware the girl is crazy ( or thirsty , ) af.
no one saying anything when seeing a loli saying they are 100 years old in manga and going half naked ( most of them with a silly and dirty character most of the time ) but here there is a problem.
So let me get it right a old girl looking like a kid and acting like a kid in a story is fine but a adult girl soon to be twenty is problematic ?
heavy sigh.
ah almost forgot, besides the over sexual problem, it’s indeed a big shit story with the “sex” as candy on top.
……still taste bad. ^^
Dragon Clan
10 months ago
i think manga authors need to understand something, it has to either be good or be 18+. it can be both, but it can’t be neither. there’s an audience for both, but if you just make it bait that isnt even good, who’s even gonna like it?
loner clan
1 year ago
💀 💀 💀
Light of Hope
1 year ago
one word.. “shyt” 
loner clan
1 year ago
I lost my brain cells reading this shit
1 year ago
2.5 stars is diabolical, understandable tho. Some mf Is defending incest smh
2 years ago
NOT LEGAL
loner clan
2 years ago
No paragraphs needed this just shit
Unholy clan
2 years ago
stop this nonsense, as if it is not normal to see sibblings and under age fan service in manga and anime. It is part of thier culture, so it is expected to see one. no one even is complaining about the manga called, “OshiNoKo”. What will your complains do? why complain to the japanese government and protest to make a change? It is just common sense to stop reading if you don’t want to. and before reading read the synopsis or the summary. the anime called, kiss x sis, no game no life, irregular magic high school have the same cincept is still developed a huge fan base not only in japan.
Unholy clan
2 years ago
For you who is disgusted, this is part of thier Culture. The age of consent in japan is 13, thus having ecchi and explicit stuff is legal(Before 2023)if the subject has a consent to do so. It would be considered as rape if it does not have a consent of the other party. I know it is quite disturbing.But it just changed recently. as of 2023, from 13 yrs old, the age of consent in japan has changed to 16. This manga has been conceptualized before 2023 since it is new. But this law may not have affect in manga production, since lolli genre is part of japanese culture especially in ecchi, and corn materials. Afair loli and illegal lollis are legal in a fan service manga or anime.
Unholy clan
2 years ago
Japanese have so many fetish qnd fantasies but I do wonder why their population is low?
Unholy clan
2 years ago
Btw, The art is so good.
2 years ago
as someone who actually has a older sister please for the love of god stop fetishizing them. It’s gross to anyone who actually has a sibling.
To summarize