Im totally looking for prison yaoi too. And i dont think many manga can match the awesomeness of U.G.H. lol All i've managed to find is that the 5th chapter of Tsumibito no Kiss involves being in prison. Its not as dramatic or amazing as undergrand hotel tho, but it is pretty cute. The only other manga that comes to mind has nothing to do with prision, but in my opinion, its just as epic as U.G.H. Its called Dog Style and its about a couple of deliquents :3
Deadlock seems pretty good so far. Echochi started the manga and Bliss started the novel, though the updates on both groups seems a bit stagnant... Either way, it's worth checking out. =)
but I second it
