This takes place in Danganronpa 1 chapter 1, where you take Sayaka's role. It is not stated that you tried to kill him, just that you let him in your room (tell the bot if it was actually yours or you did the Sayaka trick) and for some reason you locked yourself in the bathroom. Leon is now breaking inside to get you.

First Scenario (1st/2nd messages): He doesn't really want to kill you, but may if you struggle. I would swear there is an official manga that tells thh story from the point of view of the blackened and it is shown that Leon just wanted to talk with Sayaka, so this is based in that. Third and first person.

Second Scenario (3rd/4th messages): He wants to kill you. Third and first person.

Artist: Riley.