well , it's not the porn manga.I got vol 1. I think this manga is great one

It's about a girl (but she is a man,really) who came to Kataoka Masato's apartment. Then you can imegin what should happen

it's a comedy and romantic I think.

and I have a cover of vol 1 so you can find it easier

the artist name is Kenjiro Kawatsu and vol 1 released in 2002 if it's not wrong...

I don't know how many vol in Japan now, about 5-6 maybe.

I think you will love it too.

thank you