Mr. Aizawa (咲夜の父,Sakuya no chichi?) is the father of Sakuya Aizawa. He is a man with a strange sense of humor and he is apparently proud of his "naked conversation skills", much to his children's horror. Despite this, he gets along very well with his younger children.
Mr. Aizawa has silver hair that has shortish bangs on the right side, purple eyes, square-rimmed glasses and a light-colored suit.