I wonder if author actually had a story planned for filling in all the "other me" shit, he multiplied himself like 20 times and even got a scar on his face, what the hell was he doing? And how did he move a satelite through the tower? In parts?
Also what about that other girl, childhood friend or something right? Just got abducted, who knows if that was him after he went loony evil? Or maybe she was made into his secret time travel wife away from the time travel promise wife.
Theres so many times where the girl group should know about stuff but they just don't, it's not really a plot hole, just really weird. Makes me think author didn't plan to have the MC show up so frequently and talk so openly, his personality doesn't fit keeping secrets in the first place.
The main focus of the story was school love and sex in the end, very strange since those elements are the most pointless in the actual plot.