Gero's new job is to be the bodyguard of Ureshino Shiori, the daughter of the president of a major corporation. Gero infiltrates the university Ureshino attends, posing as a fellow student. Having never attended university before, Gero's eyes light up as he participates in parties and classes, experiencing a life full of firsts. However, his enjoyable campus life is short-lived, as Gero and his companions are ambushed by assassins targeting Ureshino. While they manage to protect Ureshino and continue their student life, Naruko Genya, the "sound user," is steadily making preparations to assassinate Ureshino...

The students are thrown into a panic by the rumor of "Kuradoni-sama," a ghost story invented by Naruko. In their rampage, they nearly offer Ureshino as a sacrifice to "Kuradoni-sama." The only way to stop their rampage is to stop Naruko. Ureshino, who had been escaping with the help of Shirosaki, decides to take matters into his own hands to protect his friends. Can the shy and introverted Ureshino overcome himself and grow? And with determination, Ureshino makes a request to Gero.