Pinky Nightmare

Aichi Tachibana, a naive and inexperienced high school student, has long been at odds with Suou, a charismatic and popular classmate. One day, while rummaging through the trash, Aichi inadvertently picks up a mysterious plush toy that turns out to be a malevolent entity known as Pinky. Under the guise of a playful contract, Pinky manipulates Aichi into becoming a "Succubus Substitute," tasked with collecting semen from men. Aichi's target is none other than Suou, the very person who has been driving him crazy. As Aichi makes his move, he discovers that Suou is unexpectedly receptive to his advances, leaving Aichi bewildered and Suou's intentions unclear.