SSIS-869 Secretly having sex with her boyfriend when the whole family is away

Rei Kuroshima is a dynamic music college student who only knows the world of music. She experiences a life she didn't choose and things she has never experienced... Her first work! (1) First time having sex with a teacher in school (2) First time having sex with a teacher in school (3) First time having sex while working part-time (4) First time having sex with a restraint toy (5) First time having 3P. I a lot in this unknown world. A beautiful woman who is too elegant forgets her class and happily has sex. Goodbye to my musical life.