VEC-600 Leaving her daughter alone at home with her stepfather and the end

My son, who was shy and couldn't fit in in class, brought his friend Takahashi home. Akari happily welcomes Takahashi, the most honorable student in the school, and is polite. However, Takahashi's kindness is only superficial. Friendship is just a pretend game. What she really wants is Akari's body. I want to create my own body with ripe milk that I can see even from my clothes. The evil hand approaches Akari, who is unaware of Takahashi's intentions...