Tanaka is a supporting character in the series Fate/Kalied Liner Prisma☆Illya. An amnesiac girl who tends to forget a lot of things except for her name. However she is upbeat, cheerful, For some reason, Tanaka likes to wear gym clothes instead of wearing regular clothes.
- Through hearing Illya's scream, she came to trip on her which causes them to fall out of her concern.
- Twice did she asked Illya to wear more clothes in the cold city they were in, and gets worried over her wearing thin clothes.
- Purposely, she stopped surprisingly while Illya was chasing after her saying that the reason why she doesn't gets cold in the cold weather that she's toasty, then gave her a warm and relaxing hug to prove to Illya to feel her heat.
- Even when she doesn't remember anything except for her name, she remembers her role to eliminate the Ainsworth family, and so she accompanied Illya in her journey to retrieve her lost friend Miyu Edelfelt from Ainsworth castle.