Shishi no Odoriko

Poor Yoru was betrayed by the owner of his circus troupe and sold to a male brothel. Every night, Yoru had entertained all kinds of customers until one day, a human-beast hybrid by the name of Amalan pays to have him for the night. Although Yoru has grown used to the job, he's exposed to a pleasure he never once experienced before. Yoru's life turns upside-down as Amalan requests for him night after night. With an inconsiderate personality and a tendency to beat to his own drum, Amalan has done more to make Yoru hate him than like him, but only sometimes will Yoru see a softer, kinder side from the half-beast... (Source: Tokyopop)