SSNI-721 The three days and two nights where I, the protagonist, only had 'sex' with a female student while her parents were away

It was my teacher who healed me when my brother and sister, whom I loved so much, had left home and I was lonely. It may be natural for adolescent Shion to fall in love with an older teacher. On the weekend when her aggressive behavior overshadowed her homeroom teacher's sense of guilt, the two exchanged bodies as their instincts dictated, and they continued to commit immoral acts over and over again without getting tired of it. .