One month after Eita Kidou is forced into a fake relationship with the silver-haired school beauty Masuzu Natsukawa, his life has become anything but peaceful. Eita, a high school student who swore off romance after his parents’ divorce and dedicated himself entirely to studying for medical school, was blackmailed by Masuzu into playing the role of her boyfriend to keep her suitors at bay. His childhood friend Chiwa Harusaki, who has loved him for years, refuses to back down and actively competes for his attention. The spin-off manga Ore no Kanojo to Osananajimi ga Shuraba Sugiru +H explores a what-if scenario where the harem elements are amplified beyond the original story. The arrival of a third girl, who inserts herself into the already volatile dynamic, intensifies the romantic chaos and pushes the relationships into new, more complicated territory. The narrative follows Eita as he navigates increasingly absurd and contentious situations with the girls vying for his affection, all while trying to maintain his focus on his academic goals. The setting remains the same high school environment, but the tone leans further into ecchi comedy and heightened romantic rivalry, offering a different direction and atmosphere compared to the main series.