There were two boys in a car, driving to the wood (or some place that had nobody around) in the pouring rain. They were having some kind of argument and one of them get out of the car. Eventually they made up and having sex on the car. It was really wild and hot and somehow desperate. It is the only yaoi manga I've ever read in which a couple having hot sex on a car under the pouring rain so I wana read it again.

Another thing, the art somehow resemblances that of Tsukumo Gou. I don't know if it is her work but I have gone through all of her mangas (that is available on the internet)and none of them is right.

Is it this doujinshi?
http://myreadingmanga.info/bokuranokajitsu-typhoon-syndrome-english/