Teijin Sakuichi was born in a house of one of Japan's leading conglomerates, while Ryota Kishi was born and raised in a common household, living a rather crude lifestyle. Despite this difference, they were neighbors and childhood friends that grew up together. However, in the winter of their third year in middle school, Sakuichi proposed to Ryota before going to study abroad. Years later, having no contact, Sakuichi suddenly appears before Ryota completely changed. Has Sakuichi forgotten all about Ryota and their proposal!?