Momoyama Kyoudai - Vol. 1 Ch. 4

[MangaDex]

 

[Burntrevenant]

They look more like father and son than uncle and nephew

 

[UnLunDun]

Man it's really annoying and creepy how the big brother suddenly wanna act like a dad. He's just making the situation even more uncomfortable with that roleplay.

 

[D3V1L15H]

Man it's really annoying and creepy how the big brother suddenly wanna act like a dad. He's just making the situation even more uncomfortable with that roleplay.

Actually it was implied he always acted as a dad under pretext of being her big bro