H-hold up, Hiro-kun, stop... no... Haruka Miyama thinks... Kojiro Kamiki, her best friend's child, whom she treated as her own son... Haruka mom called him “Hiro-kun” Right now, the man in front of her wasn't treating her as a mother, but as a woman. The age gap, her being a married woman, her daughter's future husband... she had countless reasons to stop his feelings and she tried to dissuade him gently, without hurting him. However... his determination didn't waver, and instead, her heart started to sway... A one-time mistake with her fake son... Haruka bore the brunt of his feelings... but at the time... she didn't realize that she was starting to give in to the temptation of immorality...