Follow the artist: https://www.pixiv.net/en/users/20046
These are scenes that Aeba Fuchi included in his amazing eroge about training and brainwashing a girl into a paizuri sex toy. If you liked this, make sure to buy the game:
Honestly really good eroge. I do wish there were some more things you could do on the L2D things and could have a few more scenes towards the end with 01 and 02