I finally remembered to finish this. This is actually interesting, I always want to see a bl story that shows what will happen after the two mcs got together. Although there were some supernatural moments like time-travel, the story pointed out a realistic outcome for a bl story after their happy ending, that there might be one that will eventually lose the feelings he have to his partner as time goes by.
Edit: Who used the comedy tag on here? wtf xD
This Ending