Kuina

He is the leader of the Dragon Knight Squad and only member to remain on Lacryma. He had feelings for Kosagi but his affections were not returned. Eventually his body decayed to the point of using mechanical prosthetics and a face mask to cover his eye and later most of his head. Prior to the series Kuina realized Lacryma was a lost cause and had decided to ally himself with Noein to enter Shangrila. However due to Harukas power increasing and Kuinas own body disintergrating Noien refused to fulfill his end of the bargain. Kuinas obsession with reaching prompts him to take Haruka there to force Noein to honor their deal. However his body is rejected by the timspace and he disintegrates. Kuina has not shown any spin weapons though one may assume that as a Dragon Knight he possesses at least one. Kuina is Japanese for rail. Wikipedia