A few days have passed from the time when Ray and the stepmother first get into explicit contact.
After that time, the two had been doing it for some other times, but it was still limited to giving blowjobs.
Ray had tried to advance further, but the stepmother always rejected him, saying that it was for the next time, if Ray was still a good boy who kept his promise..
The stepmother was really good at making him infatuated. Slowly playing him so that he could not break the promise and eventually become the stepmother's slave both in mind and body.
If not for Aina's warning, Ray might have fallen for this, but Ray was now fully aware of it and had thought of some countermeasures.
Currently, Ray and the others are attending Mia-sensei's class.