Welcome to Tokoharu Apartments - Chapter 2

...A peeping ghost.
Haha, that Grandpa's trick backfired. Instead of doing it in the hot springs, he's just doing it in the room.
That ending though...I feel kind of bad for the little sister because I kind of like her.

I don’t think it gets much hotter than the color portion in the beginning of this chapter. Yua is apex of a hot slut.