Riruka appears as a young girl with long, dark hair styled into two ponytails. She wears a pale hat between her ponytails, a dark dress, and long, dark boots that extend above her knees.
Riruka is notably hyperactive and has a tsundere personality, often getting annoyed by almost everyone, particularly the Fullbringers. Her tsundere nature is consistently evident, such as when she cares for Orihime but tries to hide her concern.
It seems Riruka has romantic feelings for Ichigo. When she first saw him, she nearly fainted and exclaimed, "He's hot!"
