At this point he could tell his fiance(forgot her name) that his relationship with the other girls is for the peace of the races and she'd probably believe him lol
Sad backstory i made up.
This is a sequel to nagatoro where she died and the senpai ended up having kids later with someone else so now she haunts everyone in his bloodline because of her regret in never getting to be with her senpai.(i forgot his name)