Nooo i don't like the story why it doesn't go the way i want noooo this manga is bad it's dragged on too long i don't like it so i'm going to leave this comment here saying i dropped this manga right now fuck this shit noooo please pay attention to me thanks
Realistically, I can't see this turning into a "Sei was the bad guy all along" thing.
He's clearly gone in the head, and can't be considered an accurate narrator for his own story anymore.
I feel like this dude's going full inception mode with his delusions.