Kiss My Blood summary:

Attractive and mysterious. Shima Inoue enslaves all the students at school with his unique pheromones. He has a secret. It's that he's a vampire. If Shima sucks your blood, you become a slave to the pleasure… Knowing that he's a vampire, high school teacher and childhood friend Tetsu Koiwai looks after him. He made a firm promise not to suck human blood, but something happens, and Shima starts sucking Tetsu's blood every night…! A vampire and a teacher's sweet, dangerous, bloody love.