After a failed suicide attempt, Kageyama is being forced into a residential inpatient program at Karasuno Hospital. To make matters worse, he has to room with an orange haired boy who seems to alternate between wanting to befriend Kageyama and struggling with his own inner demons. The group of struggling teens in his program are dealing with their own issues, but little does Kageyama know they are about to change his life.

They couldn't be more different. Ridley is a knight in shining white armor, so perfect in every way that it makes people hardly able to stand him. Prince Vandel on the other hand (aka the evil demon prince of darkness) is the sworn enemy of the kingdom, obsessed with gaining power and wearing beautiful clothes. The two young men are right out of a fairytale, practically made to be archenemies...but what if they ended up falling in love instead?