Karasu tabito, he is a handsome man with a tall body. He has a fiancé, a beautiful girl whom he has always liked. But before Karasu and the girl were matched, Karasu used to be a guy who liked to tease other girls, but after he got engaged he never did that again and wanted to be loyal to his future wife. Until one day they got married. But years later, Karasu accidentally impregnates a girl and it is his wife's best friend.