I Met a Female High School Teacher - Me, a Life's Loser (Level 1)

Sakurata Yuma, 30 years old, a former window cleaner. He is a loser in life with a dating history as long as his age—which is to say, none. The person he meets at a convenience store is Tachibana Rina, a sadistic and cruel high school girl. She declares that she will make Yuma the subject of her "sociology project" and begins to give romance advice to this man with zero dating experience. Furthermore, Tanaka Kaito, an eccentric aspiring manga artist, joins in, determined to turn this farce into a masterpiece manga. This is a passionate romantic comedy about a man who has spent 30 years running away, tackling the dungeon called romance alongside the worst possible party: a high school girl and a manga artist.