This series should have a tragedy tag.... an I also feel like they are just showing how the time traveling started... I'm guessing outta a the tragedy of their relationship....
We are all hoping for this story to have a happing ending. I think that the time travel thing is the pillar of making she healthy and avoiding developing diabetes and so avoiding having a sad ending. But there will be difficulties and hard moments. This is just me guessing. Hope they can be happy in love T_T
Series...hopefully will be updated....