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My Sister Knows

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Ganagi Mari 2022 released.
Seinen / Adult / Comedy / Drama
妹は知っている ; 妹妹是知道的 ; A Little Sister Knows ; Imoto Wa Shitteiru
Ch.7
Ch.6
Ch.5
 8.5
27 voted
55.6%
22.2%
18.5%
0.0%
3.7%
rate:

Summary

The following content is intended for mature audiences and may contain sexual themes, gore, violence and/or strong language. Discretion is advised.

In his office, Yuichiro Miki is thought to be the silent, boring salaryman — his expression blank, his presence unnoticed even at drinking-parties. But his sister, Aki, knows the truth: her older brother is quietly the funniest person in the world. From writing clever letters to small acts hidden behind his calm exterior, he holds a secret brilliance. A sibling comedy of appreciation and discovery begins: the younger sister sees the brother everyone else overlooks, and the brother’s hidden life begins to ripple outward.

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Other manga by the same author(s)

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Chapters(7)

Ch.7

Jan 13, 2026

Ch.6

Nov 24, 2025

Ch.5

Nov 24, 2025

Ch.4

Nov 24, 2025

Ch.3

Nov 24, 2025

Ch.2

Nov 24, 2025

Ch.1

Nov 24, 2025

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