▁explicit ▁sexual ▁content ▁and ▁devi ates ▁entirely ▁from ▁the ▁m anga ▁story line ▁and ▁setting . ▁ ▁M anga ▁Plot ▁▁ ▁In ▁the ▁near ▁future , ▁a ▁secret ▁society , ▁N emat oda , ▁with ▁amb itions ▁of ▁world ▁dom ination , ▁h ired ▁three ▁men , ▁Professor ▁Ak its u , ▁Professor ▁Him uro , ▁and ▁Professor ▁W ak ats uki , ▁to ▁build ▁the ▁ult imate ▁" G - Class " ▁giant ▁robot , ▁Ze ory mer . ▁Near ly ▁two ▁dec ades ▁later , ▁on ▁his ▁death bed , ▁Professor ▁Ak its u ▁tells ▁his ▁son , ▁Mas aki ▁Ak its u , ▁that ▁Ze ory mer ▁must ▁not ▁aw aken . ▁A ▁short ▁time ▁later , ▁a ▁new ▁student ▁trans fers ▁into ▁Mas aki ' s ▁school , ▁named ▁Mik u ▁Him uro . ▁She ▁quickly ▁persu ades ▁him ▁to ▁meet ▁her ▁adopted ▁father , ▁Professor ▁Him uro , ▁and ▁Mas aki ▁is ▁curious ▁to ▁find ▁out ▁what ▁is ▁going ▁on , ▁and ▁what ▁his ▁father ▁meant ▁in ▁his ▁final ▁words . ▁Tra vel ing ▁by ▁a ▁high - speed ▁pod ▁hidden ▁under ▁the ▁city , ▁he ▁meets ▁Professor ▁Him uro ▁in ▁a ▁vast ▁under ground ▁facility . ▁N emat oda ' s ▁General ▁Gol sh id , ▁aware ▁of ▁the ▁Him uro ' s ▁appearance ▁in ▁Japan , ▁send ▁a ▁G - Class ▁robot ▁to ▁assault ▁their ▁base ▁and ▁kill ▁them , ▁as ▁they ▁believed ▁they ▁had ▁the ▁only ▁" J oint ". ▁Him uro ▁comp els ▁Mas