Mizuki is a first-year member of society. One day after work, I sigh while feeling the difficulty of working with people. Suddenly when I turned to the park, I met a super beautiful man! 

"Thou, the owner of a pure soul..."

I tried to ignore this beautiful man who suddenly started to say something dangerous. What? A sudden kiss!? Furthermore, six feathers appeared in the beautiful corner! ? 

It's a devil!? Although I didn't understand what he meant, he ran away unexpectedly, but for some reason a beautiful man who stays at home everyday. Although a beautiful man who claims to be the Demon King is harassed every day, Mizuki treats herself as if she thinks that her soul is the purpose and treats her appropriately. He continued to live in a strange cohabitation, but one red moon night, the Demon King disappeared! ?