[ひとりぶたい, hitoributai](n) performing solo (by oneself); having the stage to oneself; being in sole command; eclipsing (outshining) the others; field of activity in which one is unrivaled (unrivalled)[Add to Longdo]
[どくだんじょう, dokudanjou](n) (word borne of confusion between the kanji 擅 and 壇) (See 独擅場) field in which one acts unchallenged; unrivaled sphere of activity (unrivalled); one's monopoly[Add to Longdo]