Kurosaki-san no Ichizuna Ai ga Tomaranai

A high school girl who enjoys cooking and assisting at her family's restaurant is approached by a regular customer who proposes marriage in exchange for one billion yen. The man, known as Kurosaki, keeps his face hidden beneath his long hair and displays polite yet unusual behavior. Despite her initial reluctance, he persists in his pursuit. His relentless and earnest efforts raise questions about whether this unexpected romance might result in marriage.