Bl manga

Mc has trauma and has no trust on alphas. I only remember the scene where omega mc went into heat and alpha ml found him. Mc was resigned to be taken advantage again but this time, the thing mc feared wouldn't happen because In order to stop alpha's instincts from taking over, ml actually bit his own arm. When I think it was mc' friend(?) found them, ml had this wary death glare.

I can't seem to remember the title so much appreciated to anyone who knows this.