Kurasu zenin ore no yome watashitachi no karada wa anata no mono joshi zenin petto sengen

This is the story of Fuyuki, a high school student living apart from his parents.
One day, he accidentally summons the demoness Mel to his house. After which Mel tries to take over his life.
A fight ensues between them, from which Fuyuki manages to emerge victorious. Mel admits defeat
and promises to make his every wish come true. Fuyuki, without thinking twice, asks that the girl he loves fall in love with him too.
But Mel misunderstands him and makes it so that any girl who likes him would immediately want him.
The next day, all the girls and teachers start acting differently…