Aruhi Totsuzen, Gal no Iinazuke ga Dekita

A boy is confused when his parents reveal he has a fiancée. The girl, Miran Hanazuki, is someone who often irritates him. She frequently tries to speak with him during breaks, which puzzles him. After the announcement, they begin spending time together during lunch and after school. Though initially bewildered by the sudden arrangement, he notices she consistently acts kindly toward him. The story explores their dynamic as they navigate this unexpected connection.