High-rise Invasion - Vol. 3 Ch. 37 - Okay, I Understand.

[MangaDex]

 

[orochijes]

She's a total bro-con.

 

[DaoLaw]

Her "brother" is totally right, but we all know she's not going to listen to him. And the fact that her brother know all of her incidents is really weird, and the fact that the masked guy says that they have some connection let me think that he might be an administrator, maybe~

 

[Cosmak]

The brother is a fucking pyscho. I'm totally sure of it now.

 

[evergreen_oak]

Sniper Mask is totally Yuri's brother, and he's disassociated from his identity due to the influence of the mask programming, I'm calling it now. It's gotta be that he remembers himself as another person, due to having his psyche messed up, or something like that