Immortal of Poison

Abandoned by both his wife and daughter, the unsuccessful salaryman Yukihiko Fujioka is forced into a sugar daddy arrangement by a colleague one day, where he meets the stunningly beautiful college student, Misuzu. Determined to regain his confidence as a man, Yukihiko tries to date Misuzu in a wholesome manner, but on their first date, Misuzu takes him to a hotel district and gives him a passionate kiss unlike anything he's ever experienced. However, that kiss implants a "worm" inside Yukihiko's body, granting him supernatural "superpowers"—!? Furthermore, he becomes embroiled in a battle between other "sugar daddies"—!?