The Seven Deadly Sins, Four knights of the apocalypse. Volume 17
"In the forest of fairies, Percival lies in a deep slumber. Nasiens works tirelessly, holding on to the hope of his recovery, while the forest's inhabitants watch over him with warmth and support. But one among them, Mertyl--the son of the Fairy King and Giant Queen--feels his heart stir with growing doubt. Manipulated by an outside force, Mertyl is consumed by suspicion, distrust, and a crushing sense of inferiority. As despair and anger take ho...