I read a certain yaoi manga a long time ago. I’m not sure if its plot that I’m going to quote is hundred percent accurate. There was a really tall guy with blonde or light brown (probably) curly hair. He was that type of person whose face expression is almost always emotionless. He fell in love with his neighbor who was a prostitute. The neighbor had long black hair and he often was bruised. Also I think there was a theme about some dead dog and a place that was important for one of characters and it was about to be destroyed…? (But I’m not sure about this one).
I was looking for this manga about two hours already and I’m frustrated. If anyone knows what its title is and he could tell me, I would be really grateful.

Unknown (TARATSUMI John), maybe?

Thank you for a reply. It isn't “Unknown” for sure. Actually I found what I was looking for about a minute ago. It's “Otonari ni Noraneko”. I didn't read it yet, so I don't know is it as good as I remember it, but maybe someone is interested.

Sorry I couldn't be of help. Good thing you found it