▁Volume ▁ 3 - ▁With ▁the ▁defeat ▁of ▁Capit urn , ▁the ▁young ▁def enders ▁have ▁gone ▁their ▁separate ▁ways . ▁However , ▁R ets um aru ▁soon ▁becomes ▁aware ▁of ▁an ▁even ▁greater ▁danger . ▁M ature d ▁by ▁his ▁advent ures , ▁R ets um aru ▁must ▁launch ▁a ▁cover t ▁mission ▁into ▁the ▁heart ▁of ▁enemy ▁territory . ▁ ▁This ▁form ▁of ▁the ▁story line ▁was ▁back ed ▁up ▁by ▁a ▁model ▁k it ▁line ▁which ▁featured ▁all ▁of ▁the ▁f athers ▁and ▁sons , ▁as ▁well ▁as ▁their ▁Mobile ▁M ush a ▁secret ▁weapon . ▁Each ▁of ▁the ▁k its ▁had ▁elements ▁of ▁inter change able ▁arm our , ▁with ▁a ▁story ▁point ▁being ▁that ▁one ▁certain ▁combination ▁gave ▁the ▁central ▁father ▁and ▁son ▁pair ▁a ▁D ai - Sh og un ▁form . ▁This ▁form ▁itself ▁was ▁released ▁as ▁the ▁final ▁k it ▁of ▁the ▁line , ▁based ▁on ▁how ▁it ▁appeared ▁in ▁G und am ▁E vol ve ▁ 1 4 . ▁ ▁The ▁instructions ▁for ▁the ▁model ▁k its ▁also ▁presented ▁a ▁full ▁colour ▁m anga ▁side ▁story . ▁This ▁sid est ory , ▁despite ▁using ▁elements ▁from ▁the ▁main ▁m anga , ▁appears ▁to ▁conflict ▁with ▁it , ▁most ▁not ably ▁in ▁the ▁port ray al ▁of ▁characters . ▁The ▁sid est ory ▁was ▁primarily ▁used ▁to ▁show ▁the ▁g imm icks ▁of ▁the ▁k its ▁( such ▁as ▁arm our ▁changing ) ▁in ▁action ▁in ▁a ▁story ▁setting . ▁Additionally , ▁some ▁of ▁the