Other titles :
愛玩少年, The Boy-Toy, The Playmate Boy
Author(s) :Mizukami Shin
From Fantasyshrine: Since he first met Baron Kuroba, Seiji has been secretly in love with the master of the Kuroba Manor, where servants were rumored to be attacked by a vampire. However, Baron Kuroba only sees Seiji as a lap dog that needs to be disciplined for his carnal pleasures. How can Seiji convince the baron, who doesn’t believe in love, to love him back?