Tickle boxes (Pixiv Fanbox)

The dungeon with its countless layers doesn’t exactly have a space problem, however, that doesn’t mean it’s not convenient to store things tidily. These trainees have all been encased in transparent boxes, that allow them to breathe and wiggle around without letting them leave. They’re all stuck and stored in there as part of their training sessions. Unable to escape, they have to endure non-stop tickling and sexual stimulation until their trainers set them free. Some have been inside for days or even weeks while only getting short breaks to rehydrate and clean themselves before seemingly endlessly being violated by various kinds of machinery~