Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.
斎希, the eldest son of the Kujo family, who was bound by old customs, was offered to be married to a man named Iwai in place of his twin sister.
Because of this, 斎希 started living together with a mysterious man named Iwai, but she was forced to take care of Iwai's meals, which were busy every day, and to put her on her lap, so she lived like a real marriage.
But from one night, she began to stack her body with Iwai?