Wild Arms: Twilight Venom (TV Series)

Dr. Kiel Aronnax, Mirabelle and Loretta encounter a ten year old boy during their escape from prison. He turns out to be the former famous gunslinger Sheyenne Rainstorm and is equipped with a famous and mysterious ARMS weapon. The series follows Sheyenne and Kiel as they search for the mystery of Sheyenne's missing body.