▁D zh uly un its a , ▁Vel iko ▁T arn ovo ▁Province , ▁Bulg aria ) ▁is ▁a ▁former ▁professional ▁sum o ▁wrest ler ▁or ▁r ik ishi . ▁He ▁made ▁his ▁debut ▁in ▁ 2 0 0 2 , ▁reaching ▁the ▁top ▁division ▁just ▁two ▁years ▁later . ▁In ▁ 2 0 0 5 , ▁he ▁reached ▁the ▁rank ▁of ▁▁ ō ze ki ▁or ▁' ch ampion ', ▁the ▁second - high est ▁level ▁in ▁the ▁sum o ▁ranking ▁system ▁behind ▁only ▁y ok oz una . ▁On ▁May ▁ 2 4 , ▁ 2 0 0 8 , ▁K oto ō sh ū ▁made ▁history ▁by ▁becoming ▁the ▁first ▁European ▁sum o ▁wrest ler ▁to ▁win ▁an ▁Emperor ' s ▁Cup . ▁He ▁was ▁one ▁of ▁the ▁longest ▁serving ▁ ō ze ki ▁in ▁sum o ▁history , ▁holding ▁the ▁rank ▁for ▁ 4 7 ▁consecutive ▁tournament s ▁until ▁November ▁ 2 0 1 3 . ▁In ▁January ▁ 2 0 1 4 ▁K oto ō sh ū ▁obtained ▁Japanese ▁citizens hip , ▁a ▁requirement ▁of ▁becoming ▁an ▁elder ▁in ▁the ▁Japan ▁Sum o ▁Association , ▁and ▁he ▁announced ▁his ▁ret irement ▁during ▁the ▁following ▁tournament ▁in ▁March . ▁In ▁April ▁ 2 0 1 7 ▁he ▁opened ▁his ▁own ▁training ▁stable , ▁Nar uto . ▁ ▁Early ▁life ▁and ▁sum o ▁background ▁He ▁was ▁originally ▁a ▁Gre co - R oman ▁wrest ler , ▁co ached ▁by ▁his ▁father , ▁and ▁by ▁the ▁age ▁of ▁ 1 4