Texhnolyze

In a gritty underworld where crime syndicates rule and fighting pits provide entertainment, Ichise immerses himself in physical pain to hide his grief. However, when a gang amputates his arm and leg, Ichise finds himself the subject of the Orugano group, which controls cybernetic technology that can improve his life. When a mysterious stranger and a young, psychic girl arrive in the city, their fates and Ichise's intertwine in a momentous way! (official distributor synopsis)