▁sister s ▁frequently ▁under go ▁surg ery ▁to ▁become ▁cy borg s ▁( Rob oge ish a ), ▁with ▁machine - gun ▁b ust s ▁and ▁other ▁robot ic ▁enh anc ements . ▁On ▁their ▁first ▁mission , ▁however , ▁K ik ue ▁is ▁sever ely ▁wounded ▁when ▁she ▁self lessly ▁saves ▁Y osh ie ▁from ▁being ▁killed ▁by ▁one ▁of ▁their ▁target ' s ▁body gu ards . ▁Later , ▁K ik ue ▁explains ▁to ▁K agen o ▁that ▁though ▁Y osh ie ▁anno ys ▁her , ▁she ▁still ▁lov es ▁her ▁sister . ▁Non eth eless , ▁K ik ue ▁will ▁never ▁be ▁able ▁to ▁recuper ate ▁sufficiently ▁to ▁serve ▁as ▁an ▁assass in . ▁ ▁The ▁story ▁reaches ▁a ▁turning ▁point ▁when ▁Y osh ie ▁is ▁sent ▁on ▁a ▁mission ▁to ▁kill ▁a ▁small ▁group ▁of ▁elder ly ▁people ▁and ▁their ▁young ▁care t aker ▁living ▁near ▁the ▁K agen o ▁Ste el ▁building . ▁The ▁sen iors ▁then ▁reve al ▁that ▁they ▁are ▁the ▁relatives ▁of ▁the ▁K agen o ▁Ste el ' s ▁ge ish a ▁and ▁g ob lin ▁assass ins ▁and ▁that ▁K agen o ▁Ste el ▁has ▁actually ▁been ▁ab duct ing ▁these ▁girls ▁to ▁serve ▁their ▁own ▁ends . ▁Y osh ie ▁confront s ▁K agen o ▁and ▁his ▁father , ▁who ▁confir ms ▁the ▁story . ▁Then , ▁the ▁du o ▁threat ens ▁to ▁kill ▁K ik ue ▁unless ▁Y osh ie ▁comple tes ▁what ▁turns ▁out ▁to ▁be ▁a ▁suic ide ▁mission