Her daughter brings her boyfriend home. Maki, the mother, is happy to see her growing up, but she notices that her boyfriend, Takuya, is acting strangely... When she hears his troubles, it seems that their relationship is strained because sex isn't going well. Wanting to help him somehow, Maki decides to teach him how to kiss... Her tongue warmly and gently entangles with his, and her body gets excited every time their lips touch. Unable to hold back from just kissing, Maki tells him, "This is just practice," and gently guides his stiff cock deep into her womb...