I really loved how realistic it was when the two of them tried to keep their composure from the sudden change of worlds, maybe for the sake of each other, but still have separate frames when they'd break down from the frustration and everything. Even in the conclusion of the manga! The open ending makes me sad and yet happy because even tho i don't want to be separated from their lives *(i still want to know what happens after ;-

* the characters now have their own individuality, each pursuing their own happiness.