Osawari furasshu -dereahe ! imouto ha hatsujouki- (jap) by BouSoft - Adult Sex Game

Tactile stick.
We touch the sister for different places, earning points and bringing her into wild excitement.
There is a shop where you can buy bonuses, toys, poses, aphrodisiacs, etc.
The faster you level up sisters, the more points you get at the end.
Additional menu on F1.