
I can understand the turn back time thing because the MC wants prevent countless deaths from the gates. While I agree that the romance should not last that many chapters, I understand that the MC deserve a normal life after so many sacrifices he made. They should just show the MC meet the love interest, then time skip, marriage life with kid, let the readers imagine their romance.

I would rather Hatsumi's end up with even Azusa or Shinobu than that Tachibana.
To be honest, they're all victims of their families and the father of Tachibana dude is the root of problem. Didn't have to gut to marry his love of life, but still have an affair while marrying with kid. After everything broke out, didn't come for Azusa's mother. Still neglect of his kid and wife for so many years.
It's truly three of them against the world.
Sometimes I wonder, what if Nobu's never taken, then what would happened? Would they have a normal childhood if all three're adopted together. Would they find out about the sister Mary and dedicate their lives to put a stop to that?