The fountain (Pixiv Fanbox)

Being turned into part of the dungeons interior decoration is already rough. Often naked and exposed, trainees who find themselves in such situations feel severely humiliated. Even worse when people passing by almost seem to not even care about their predicament. This trainee right here is stuck inside a wall-mounted fountain with mechanical toys pleasuring both of her holes gently. It took a while for her to reach her first few orgasms, however, after being stuck there for some time she’s been getting more sensitive and climaxing far more regularly. There’s nothing she can do about her situation, apart from enduring orgasm after orgasm for everyone to see until her trainer deems her session to be over~