In'en no Yu ~Sandai no Okami-tachi to no Mikkou~ The Motion Anime

Tatsuhito works at a hot spring inn that belongs to his wife Mia's family. Her mother, Midzuho Shimada, is the owner of the inn and combines the best traits of an excellent manager and a middle-aged woman - She is short at 163 cm with an incredibly sexy figure 97/61/89 and simply adores young boys. Also working here is Mia's stepmother, Shigeta Nagisa (Nanao) - After giving birth, her sex life deteriorated significantly and she went to the hot springs hoping to fix this situation. 

Tatsuhito loves to play various games on his phone. One day he stumbles upon an unusual hypnosis app. Of course, he doesn't believe in it, but he decides to test it anyway and chooses his wife's sister Mako-chan as a victim. Tatsu-kun was surprised and at the same time incredibly aroused that the app actually works. He decides to use the app on other women at the inn.