Wild Arms: Twilight Venom

Child at Heart (1x17)

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After falling off a river's cliff, Sheyenne suffers from memory loss. Doctor Clark, a man who tends to orphans, takes him in and Sheyenne feels right at home. But when a female outlaw named Cannon and her gang come to take the doctor, Sheyenne is forced to up his ARMS to protect Dr. Clark and the kids who reside there.