A River Runs Through Us - Haikyuu [IwaOi]

There are only two rules that our vast and confusing universe will follow.

The first: nothing lasts forever.
Not you, not your friendships, not your home, not even the ground beneath your feet. This is an absolute rule. It is strict and unforgiving. When someone says they will love you "forever", they must be lying. There is always some kind of end.

The second: everything lasts forever, if you let it.

Oikawa Toruu is the lord of an ancient land, Iwaizumi Hajime is his faithful guard.
They have cared deeply for each other since they were small, but when tragedy befalls them, Iwaizumi must embark on a journey through time to save the man he loves.