from Hanbyonin, 10 page comic, new maid wakes up restrained in a chair with a dildo device up her ass, her master tells her that if she stands up or has an orgasm, the device will explode - he turns the device on which has vibe and enema (aphrodisiac?) functions, she tries to endure it but fails and has wild orgasms - in the end it's not really a bomb but a tool to mind break her
hope someone does a proper translation, looks really good