kyokosama's manga / #Alien(2)

Tatsuya, a virgin male in his 20s, is chosen by an alien named Orion to be a magi. As a magi, Tatsuya's appearance change into some attractive boy and he spreads pheromones that attracts men so he can collect semen but his best friend, Kentaro, is not willing to let him go around getting lay by strangers.

A doctor and his assistant are investigating a rare form of life that provides with endless sexual pleasure to it's victims. They intend to discover the secrets behind their behaviour so they can reproduce and sell this organisms, but there is no other choice than experimenting it their selves. The tentacles will make them come over and over again.