Yumi Sakurakouji is a young E.V.O (short for Exponentially Variegated Organism; a person infected with active nanites)
Yumi is a beautiful teenage girl of Japanese descent with dark brown eyes and chin-length hair. Her outfit consists of A small pink and magenta vest with cap sleeves over a magenta tube top, with a magenta choker around her neck, blue short-shorts with a magenta belt around her waist, which holds her magenta whip with a spade/heart-shaped end, magenta and pink boots, white stockings with magenta outer upper edges and pink and magenta boots. On her arms are tight-fitting white armbands with magenta outer upper edges almost reaching up to her shoulders with magenta cuffs on her arms, and she also wears magenta and pink gloves with magenta fingers. Sometimes, she replaces her vest with a pink and magenta jacket, resembling Rex's jacket.