Claire, who was reincarnated from another world works as a secretary to no other than the Demon King Noah himself, she was living a happy days beside him who cherishes her. However one day, she was suddenly engulfed by a magic square and was summoned to where the Hero, Ilvert is. He who is trying to seal the Demon King away. Claire reluctantly decided to follow the journey of Ilvert to return to Noah's castle. But for some reason, he was also extremely sweet to Claire…?!