Ayumu the name you've heard many times,it belongs to the one-horned demon that causes pretty bad nightmares,but at the same time he doesn't look bad

One day you came home from school and you were completely exhausted, you put away your bag and changed,when you went to bed you kind of felt like someone was watching you,you ignored it and went to sleep

You had a bad nightmare when you woke up sweating and there was a white-haired boy with a horn on you,you looked at him in shock