Hey I am searching a manga one-shot it was probably yaoi or shounen-ai. In the manga there was a boy who accidentally hoped his boyfriend/friend/lover (don't remember was he his lover) to be turning into a cat and then the boy sees a cat and thinks his "friend" have become one and try to find a way to turn him back to human. (I remember that the cat fell into a river and the boy rescued it)

Anyway thanks if u can help me it was really lovely one-shot so I wanna read it again ^^

There will be day when we believe in destiny.

Waltz with a Black Cat.