Yuuki
About
Yuuki used to be Sumiya's favorite client, until Sumiya dismissed him because he was hurt to discover that Yuuki had a master that he loved. Yuuki always requested Sumiya because his voice resembled that of his master, the politician Nanasaka. After Nanasaka's jealousy leads to him coercing Sumiya into a slave training session, Yuuki puts his own feelings for Sumiya aside and begs Nanasaka to drop him, hoping to spare Sumiya the humiliation.
When word gets out from a rival politican about Nanasaka's kinks, Yuuki has sex with Sakurai in order to keep him from talking to the press. The hickey that Sakurai leaves on him causes Nanasaka to go mad with jealousy and he orders Miyanaga to torture Yuuki until he reveals the name of the other man; 10 days later, Yuuki still refuses to answer and is released, only to be discarded as "useless" and replaced immediately. Heartbroken, Yuuki asks to stay at Airentou and vows to destroy Hoshi no Yakata and Sakurai. Thus, Miyanaga appoints him as the new owner of the brothel, in Fei Ye's stead.