Zain - Sore wa, aragaenai shoudou -

Zai, a slave who was once a complete gladiator, is assigned to guard the Duke Vermer's heir, Darc. Yet for some, this became a nightmare... and for others, the opening act to an unknown truth. Duke Vermer, rumored to be a lover of men. Darc, whispered about as a pleasure-seeker. Fei, lamenting his own unfortunate upbringing. Zai, staking his hopes on what it means to be human. Where will their paths lead? To death, or to something more?