Hyouketsu Kyoukai no Eden

Humans face invasion from the Yuugenshu, an unknown existence, and survive through the protection of the floating continent Obie Crea, shielded by Priestesses' prayers. Sheltis once sought to become a Sen'nenshi, a partner to Yumii, a Priestess and his childhood friend. After falling from the continent into the Eden, known as the Garden of Corrupted Song, he acquired Mateki, a trait unique to Yuugenshu, and was banished from Sophia, Yumii’s home. Yumii had hoped for Sheltis to become her Sen'nenshi, but her wish remains unfulfilled due to his fall. The story unfolds in a layered fantasy world shaped by their intertwined emotions.