Class no Inkya ni Kareshi no Sainou ga Ari Sugiru
クラスの陰キャに彼氏の才能がありすぎる
A girl, devastated after a painful breakup, realizes her quiet and unassuming classmate is extremely handsome. To provoke her ex into regret, she persuades him to act as her boyfriend, though not entirely voluntarily. Unintentionally, his easy, boyfriend-like behavior begins to stir unexpected feelings in her.