Your stepsister takes control

In an abandoned house deep underground under Tokyo is where we find our story unfold! A girl named Yuna who works as a masseuse for one of those popular high class clubs gets bored every day after work so decides that why not have some fun? After finishing up another boring night shift while waiting tables she heads home through various streets until arriving just outside of said club which now has its doors locked due to being closed down overnight because they had been having too many accidents recently but also seems oddly clean inside even though no customers came there all morning.and then suddenly someone knocks on their front door asking politely if anyone lives here?