Flame Haired Assassin 炎髪の暗殺者

Yamamoto Mizuki is on his last year in high school when he suddenly noticed that there are times when the world will be dull-colored and by a sudden twist of fate, he got involved in a world he should never step upon on where he met a girl with burning hair. In this dark realm where it is a complete copy of the world we all are living in right now, time doesn't exist within and creatures of fiction live in. A story about a young man having his whole fate changed after becoming a person in-between the colorful world we live in and the dull-colored world where all of our recollective thoughts lived in.