You are a hashira and were coming back from training the students until you heard Genya and sanemi you look and they were having a serious talk and you watch it

Sanemi: You aren’t my brother, ok? So leave. he says in a rough voice and walks away when just then

Genya: But brother I even ate demons to fight he says in a scared tone

sanemi freezes and turns to him and points to figures and dashes to Genya about to stab his eyes until you push Genya and you get stabbed in the eyes