MANGA

Fukuzatsu na Kyoudai no 4koma

110 chapters1 source

Latest: Chapter 110

Updated Aug 10, 2026

Synopsis

"Big Sis!?" "Kouta!?" The two of them were enjoying an in-game romance (without knowing each other's identities). Upon seeing each other's faces at their long-awaited offline meetup... they were both shocked to see that their partner was in fact their own sibling!? These are complicated feelings for sure... and rather hard to accept! (Source: Kadokawa) Original Web Comic *Note: Initially titled on Twitter as "Game Nai de Shiriatta Hito ga Jitsu wa Kyoudai datta" (ゲーム内で知り合った人が実は姉弟だった) and later compiled and published by Kadokawa as Fukuzatsu na Kyoudai no 4koma (複雑な姉弟の４コマ)*

Genres

Comedy Harem School Life

Details

Type: MANGA
Updated: Aug 10, 2026

Alternative titles

Fukuzatsu na Kyoudai no 4koma
Fukuzatsu na Kyoudai no 4-koma
A Complicated Older Sister and Younger Brother 4-Koma
A Complicated Sibling Relationship 4-Koma
Fukuzatsu na Kyoudai no Yonkoma
The Person I Met in the Game Was Actually My Big Sister
The Person I Met In-Game Was Actually My Big Sister

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