Onii-chan, Asa made Zutto Gyutte Shite! (2020)

Based on the erotic game by Tinkle Position. The older brother of four younger sisters - the protagonist - suffered from severe asthma when he was younger. Due to this, they started the routine of one of the sisters sleeping with him for one day, and then switching to another. One day, their parents who are researchers, ordered a demonstration of their newest experiment, "Improve his immunity by hugging him." "Hug a little sister affectionately for 10 seconds every day before going to bed♪" He decided to hug the sister he was going to sleep with him with even more affection than she could ever imagine...

Also known as

お兄ちゃん、朝までずっとギュッてして！

Format

OVA · 4 episodes

Status

Finished

Genres

Hentai

Studio

Studio 1st

AniList score

65/100

Main characters

Onii-chan, Sora Onami, Kohaku Onami, Akane Onami, Sumi Onami