Sekai de Ichiban “Kawaii” Amamiya-san, Nibanme wa Ore.

Harema Kouki is a high school student who works as a model under the name Hikari, known as the "Cutest Girl in the World." In reality, Kouki is a boy who has grown used to his own charm, making it hard for him to find others attractive. However, this changes when he begins to see his unassuming and ordinary classmate, Amamiya-san, as more appealing than himself. The story explores the growing dynamic between Kouki, who is confident in his looks, and Amamiya-san, who remains unaware of her growing appeal.