Fuwa Tsutomo, a science teacher, was labeled as creepy, dirty, and scary by his students, which made him feel like he couldn't reveal his real self as a charming man. He developed a crush on Kurusu, one of his struggling students, and decided to help him by taking on a new identity - the "Science Phantom." Fuwa became Kurusu's private tutor, but his secrecy was exposed by a mutual acquaintance of Kurusu's. Although Kurusu didn't hold any grudges against his alter ego, he was resentful towards Fuwa himself.