Choko Egami has “friends”. “Friends” that cannot be seen by ordinary people. She is a girl loved by demons. Just being there will amplify the demons around, and sometimes even troublesome demons. However, Iizuka, the homeroom teacher I met at the third transfer destination, had the power to soften mysteries and demons. However, Iizuka was obsessed with some sort of strange demon. Choko, together with her partner Demon Witch Band, explores the true nature of Demon ...! ? Night is the true value of the activity!