VEC-451 A secret that is only between me and my friend's mother. - I've had sex with an aunt while forcing myself to cum inside her... - Rika Tsubaki

Takagi, who was visiting his classmate's house, had been in love with his friend's mother, Rika, since childhood. - Takagi is worried about Rika, who is so beautiful and kind that he unconsciously follows her with his eyes, and is restless. - On the way to the bathroom, he secretly goes to check on Rika and comes across a crucial scene where Rika is cheating on him. - Takagi's emotions run wild due to the shocking truth...