Chouno, Koushaku

蝶野攻爵

Koushaku Chouno serves as a primary antagonist in the Busou Renkin series. He is introduced early in the narrative and acts as the main adversary opposing Kazuki Muto and Tokiko Tsumura until the arrival of L.X.E.
He presents a sinister and frail appearance, characterized by "eyes like rotten river sewage." He pursues eternal life, regardless of the methods required to achieve it. This intense craving for immortality originates from a mysterious illness that severely weakens his body.