Probably just how they adjusting with each other habit, cos now they live together of course there'll be some incompability that they'll find out and have to work it out.
Somehow i want the present kids know about this miserable timeline, and shuri know about how the kids actually love her in that timeline. So everyone will cherish each other even more..
i hope Tachibana H will make another story about Alice, it's okay if it's just spin-off like this to solve Hotaru sibling existence (and mikan-natsume relationship😚)!
Thank you for translator team!