Katakoi Kazoku

Overview

Takatou Shinobu, brother-lover, 25 years old. Living under the same roof are his older brother, Masaki, and nephew, Kazuomi. Kazuomi is a troublemaker who is suspicious about Shinobu's familial love for his father, and always bullies Shinobu when Masaki isn't around. And to top it off, he even does something like that…! Because they are "family," there are many feelings they cannot communicate.

Source: AniList