Ryuusei Narukami

Ryuusei Narukami is the protagonist of the series. In his past life, he reigned as the powerful "Demon King" in another world until he was defeated by the hero, Meteor Hanaori. After reincarnating into modern Japan, the sudden awakening of his past memories shocked him so deeply that he became a shut-in NEET, spending all his time playing video games. However, an unexpected reunion with Meteor—who has also reincarnated as a high school girl—motivates him to re-enter society as a teacher at her school, Mitsurugi Girls' High School. Although Ryuusei earnestly desires a quiet, normal life and tries to keep a low profile so that their past powers do not disrupt the peace, he constantly finds himself dragged into hectic school rom-com shenanigans and chaotic situations due to Meteor's relentless antics.