Win 20 battles with any of Kurosaki Ichigo, Dangai Ichigo, Fullbringer Ichigo lvl 1, Fullbringer Ichigo lvl 2, Bankai Ichigo, Fullbringer Ichigo lvl 3, or Hollow Ichigo versus any Espada0/20
any of these
You need to reach Privaron Espada to begin this mission.