BL Game no Shujinkou no Otouto de Aru Koto ni Ki ga Tsukimashita - Vol. 1 Ch. 5

[MangaDex]

 

[QueenKumQuat]

I feel like MC will end up with Haruki's little sister, or Shirousa. I think Shirousa would be interesting. They seem like opposites... OR maybe she's a fujoshi watching the interactions.