The Devil is a Part-Timer! Episode 6: The Devil Climbs the Stairway to School
Episode 6 of 13 of The Devil is a Part-Timer!, aired May 9, 2013, 24 minutes. Available with English subtitles and dub where released.
Episode summary
Back in Ente Isla, the other high priests find out about Olba's betrayal. Meanwhile, Lucifer's moved into the Devil's Castle and gotten Maou and Ashiya into school ghost stories.