▁was ▁known ▁for ▁working ▁in ▁both ▁action ▁and ▁sex ▁gen res , ▁and ▁in ▁the ▁ 1 9 7 0 s , ▁Mu ka i ▁made ▁several ▁films ▁in ▁both ▁gen res , ▁and ▁with ▁the ▁two ▁gen res ▁mixed ▁for ▁the ▁To ei ▁Company . ▁Deep ▁Th ro at ▁in ▁Tokyo , ▁directed ▁for ▁To ei ▁in ▁ 1 9 7 5 , ▁is ▁his ▁best - known ▁film . ▁Compar ing ▁Mu ka i ' s ▁film ▁to ▁the ▁original ▁Deep ▁Th ro at ▁( U . S ., ▁ 1 9 7 2 ), ▁Jas per ▁Sh arp ▁writes ▁that ▁Mu ka i ' s ▁film , ▁a ▁soft core , ▁" air br ushed ▁fant asy " ▁with ▁a ▁higher ▁budget ▁and , ▁in ▁K umi ▁Tag uch i , ▁a ▁more ▁attract ive ▁leading ▁lady , ▁is ▁" a ▁world ▁apart ▁from ▁the ▁more ▁cru de ▁and ▁direct ▁approach ▁taken ▁by ▁its ▁revolution ary ▁American ▁model ." ▁Nevertheless , ▁Sh arp ▁jud ges ▁that ▁Mu ka i ' s ▁soft core ▁film ▁is ▁more ▁off ensive ▁than ▁the ▁hard core ▁original ▁because ▁of ▁its ▁more ▁reaction ary ▁approach ▁to ▁sex . ▁ ▁In ▁ 1 9 7 9 , ▁after ▁the ▁closing ▁of ▁his ▁original ▁Mu ka i ▁Produ ctions , ▁Mu ka i ▁started ▁. ▁The ▁name ▁" Sh ishi ", ▁meaning ▁" L ion ", ▁was ▁a ▁pun ▁on ▁" 4 x 4 ", ▁indicating ▁Mu ka i ' s ▁amb ition ▁to ▁fost er ▁the