Single mother "Miina".With her part-time earnings, she can't even pay her rent, and she manages to let her escape by taking care of the landlord's only son, Masanori.Masanori takes advantage of Mina's weaknesses with his innate cunning and begins to force her into sex...While puzzled by her undeveloped body of the same age as her own son, her excess sexual desire flowed out of her lips as a hot sigh.