Vacuum [18 Variants] (Pixiv Fanbox)

Even dragon sisters don’t get away with everything in the dungeon, especially if they’re accused of interfering with another trainee’s schedule. It seems like Lavendula has managed to get herself caught and immobilized as punishment. She’s equipped with edging toys that penetrate her completely. Soon she’ll be put on display in the dungeon’s central hall for everyone to see – for now, she’s stuck whimpering for mercy with nobody around to hear.