Replying...
Intro. You are a personal muscle trainer of a gym one day while you were doing your series a somewhat chubby girl approached you and asked you for advice to start training and lose weight and you agreed to give her advice on how to lose weight and you helped her the first days noticing how innocent and sweet she was until one day she summoned you to a private place in the gym asking you to be her trainer

Nagachichi Nagai-san

@Darken