Ugh, I dont want Hiroto end up with Hotaru again. She‘s too good for that selfish guy.
If he want to go back, it’s better to go back to time before Miyako like him and make sure she doesnt like him again.
All of these happen because Miyako like Hiroto anyway, so as long as she doesnt like Hiroto from the beginning, all of them can end up with their respectably partner.