Rookie Trainer

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Rookie Trainer
Cinderella Girls Character Data
Name: ルーキートレーナー (Rookie Trainer)
Voice actor: 佐倉綾音 (Sakura Ayane)
Age: 19
Height: 157 cm
Weight: 45 kg
Birthday: March 10th
Blood type: B
Three sizes: 77-56-82 cm
Handedness: Right
Hobbies: Gyms
Horoscope: Pisces
Hometown: Tochigi
Card Type: Passion

Rookie Trainer (Japanese: ルーキートレーナー Rookie Trainer) is a trainer character available in THE iDOLM@STER Cinderella Girls. Her basic card is Normal. Her card is available as event compensation for the "Idol Survival in Theme Park" event. She also appeared in the "Idol Produce: Choco for You!" event. She was originally voiced by Ayumi Fujimura (藤村歩 Fujimura Ayumi) until she was recast by Ayane Sakura (佐倉綾音 Sakura Ayane) on November 28th, 2022.


  • All the Trainers are sisters, which she was the youngest.
  • Her official name is Kei Aoki according to "The iDOLM@STER Cinderella Girls - New Generations" manga.
  • Because her name can be read as "Ruki", she is nicknamed "Ruki-chan" by Mio Honda in the anime.
  • All the Trainers are the first characters of the Cinderella Girls series and the fourth ones in THE iDOLM@STER franchise as a whole (following Yukiho Hagiwara, Kazuki Tsukumo, and Yuika Mitsumine) to be recast.

Character Gallery


THE iDOLM@STER Cinderella Girls Cards