A modern world where demons have become rampant.One day, the anti-mage heroine, who was in trouble with money, discovers a "beautiful demon" in a weakened state that is different from the demons she has subjugated so far.
Thinking it's a rare individual, he takes it home and cleans it up before trying to sell it, but when he regains consciousness, he's attracted to the heroine's kindness and the fact that he didn't beat himself. The days have begun...

It's a huge body single-minded attack, immediate fall pleasure fall sweet love.