Yuta Saga's sister has an interest in satanic rituals and accidentally transports him to a separate world while trying to summon a demon. Yuta's saved by a girl named Beli and she agrees to let him live if he...

Hida Kizuna visited the strategic defense academy Ataraxia based from the call of her big sister where he encountered the girl who operated the magic armor , Chidorigafuchi Aine. Aine suddenly took off her...