Under Grand Hotel.

Under Grand Hotel (Japanese: アンダーグラウンドホテル, Hepburn: Andāguraundo Hoteru) is a yaoi manga by Mika Sadahiro about two prisoners, Sen and Swordfish, who try to survive the notorious prison "Under Grand Hotel". It is published by 801 Media in English, although at one point, Tokyopop offered a license.