Hello,
I am looking for a Yaoi manga, but I don´t know the name.

It starts with a boy, sitting on the street. A women wants to help him, but he doesn´t want it.
A black haired businessman comes to him and the young boy is nice to that man. I think they go to a hospital.

Later, in the middle of the story, the young is walking naked through the apartment.

An side information is, that the boy has a fight with other schoolboys.

Thanks, your StrongPop

PS.: Please forgive me my bad English.

I think it's this one Kawaii Hito. volume 2

Yeah, that´s right.
Thank you very much, Shikki.
StrongPop