The whole story is good. Even this series contain with sci-fi and fantasy.
Until eps , this series is still good. I like the vibe between Wa and Four.
Its kinda different from other GL, especially when you have a power to turn back time or see future.

But, the last episode with their weird last scene between Kie and Four ?
Oh C'mon. It would be nice if they put married scene or future scene about Wa and Four, isnt it ?

Overall, this series is good and sad.
Because its feel like,
No matter how much I turning back time, I will always find you and remember you. Even you're forget about me.