Rei Kuroshima(20), a current music college student who only knew the world of music. She experiences a life she didn't choose and things she never experienced before... a work full of firsts! (1) First time having sex with a school teacher (2) First time serving someone (3) First time having sex at her part-time job (4) First time orgasming with a bondage toy (5) First time having a threesome. She cums in an unknown world. A beautiful woman who is too elegant forgets about her sense of class and has fun having sex. Say goodbye to her life in music.