What's it like being a prison warden in another world? Thieves, pirates, assassins, con artists, terrorists... werewolves, vampires, witches, necromancers, succubi... This is the Rose Iron Prison, where the world's most dangerous witches are gathered. "I must make this the best model prison in the world!" said a prison guard who was transported to another world. "Warden, someone escaped again!" "Catch them and put them in solitary confinement." Another peaceful day at the Rose Iron Prison.