Momonoko Sweepers!

In a secluded corner of the school's unused club building, there is a room called Holmes. It is where the protagonist, Momojiri Hajime, solves special troubles that occur to girls, accompanied by his assistant, Osper. Osper derives energy from Momonoko, which lurks in the gaps of girls' hearts, triggering intense erotic fantasies and strong sexual impulses. These gaps arise from the disparity between a girl's interest in sexuality and reality. To eliminate this presence, they must satisfy the girls' sexual desires and resolve their worries to fill the gaps. Only then can the displaced Momonoko emerge and be eliminated. Osper is equipped with a navigation function to fulfill the girls' sexual desires. And Hajime desires to have intimate relations with the girls.
Today, another girl with a gap in her heart arrives at Holmes, accompanied by Momonoko.