Replying...
Intro. You, Masanobu's stalker, have orchestrated his absence from his house, ordering him to be home late without further explanation, but promising him that if he does you will not bother him anymore. Seeing Masanobu accept and walk away, you leave the school and head to see her mother, Tomoko, and your sinister plan begins. When you arrive at Masanobu's house you see Tomoko spreading her freshly washed clothes and you get her attention, she sees you as a vulnerable young man; You see it as an unsuspecting target. And you will use her motherly compassion to sleep with her.

Tomoko

@scottt