Koharu Koga

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Koharu Koga
Koharu SS.png
Cinderella Girls Character Data
Name: 古賀小春 (Koga Koharu)
Voice actor: 小森結梨 (Komori Yuri)
Age: 12
Height: 140 cm
Weight: 35 kg
Birthday: April 1st
Blood type: O
Three sizes: 72-54-77 cm
Handedness: Left
Hobbies: Playing with Hyou-kun, Helping at home
Horoscope: Aries
Hometown: Saga
Card Type: Cute icon.png
Image Color:
Koharu sign.png

Koharu Koga (古賀小春 Koga Koharu) is one of the characters available in THE iDOLM@STER Cinderella Girls and THE iDOLM@STER Cinderella Girls Starlight Stage. She is voiced by Yuri Komori (小森結梨 Komori Yuri).


Annual Rankings

Event Prelim Rank Final Rank
1st Cinderella Girl General Election Unranked Unranked
2nd Cinderella Girl General Election Unranked Unranked
3rd Cinderella Girl General Election Unranked Unranked
4th Anniversary Voice Idol Audition Unranked Unranked
4th Cinderella Girl General Election Unranked Unranked
5th Cinderella Girl General Election Unranked Unranked
6th Cinderella Girl General Election Unranked Unranked
7th Cinderella Girl General Election Unranked Unranked
8th Cinderella Girl General Election Unranked Unranked
9th Cinderella Girl General Election Not applicable Unranked
10th Cinderella Girl General Election Not applicable Unranked
Stage for Cinderella Unranked Not a candidate


THE iDOLM@STER Cinderella Girls Self-Introduction

"I'm Koharu~. Are you going to produce me…? If Koharu wants to be beloved by everyone, so she must become a cute, princess-like idol, I think! Then, I'm counting on you~♪"

THE iDOLM@STER Cinderella Girls U149 Anime Idol Profile

Koharu wants to be a fluffy sparkly princess~

An O-type Aries who longs to become a princess one day. She is a kind and friendly person who is always seen with a smile on her face. Koharu is known for doing things at her own pace, and is not good at dancing or exercising. Her best friend is her pet iguana, Hyou-kun. They often draw pictures together.

Character Description

Hailing from Saga, Koharu is a twelve year-old girl who wishes to become a princess that everyone can love. She originally became an idol because she wanted to try on cute frilly dresses like the ones that princesses wear. Koharu greatly admires princesses, dreams about becoming a princess that is woken up by a prince’s kiss, and she says that she enjoys sleeping because the world of dreams is where everyone can be a princess. Koharu states that she’s always loved princesses, and that every day she dreams of becoming cute and beautiful just like them. During her visual lessons, she is complimented on her smile by the trainers, saying that it’s just like a princess’s smile. In her vocal lessons as well, Koharu practices her singing by singing the theme song from a popular princess movie. Koharu wants to become an idol that brings as much happiness to her fans as possible, and she wants to become a dream that other people can watch on TV like she once did.

Despite desiring to be a popular princess-type idol, Koharu doubts her ability to become the idol she aims to be, stating she's not good at studying and she isn't physically strong like other idols. During one of her lessons, she says that she’s often standing in the corner at school during events like sports festivals or school plays. She feels that if she was all by herself she wouldn't have been able to become an idol since others say she takes it too easy. Koharu says that sometimes she can’t do anything special and that other people have dealt with things for her in the past. It is true that Koharu is very easygoing, like when she drove at her own place while playing a racing video game with other idols, or when she was able to sleep with many idols like Takumi Mukai and Akane Hino talking loudly around her. Koharu says that the best way to make progress in idol and school work is to be relaxed. However, Koharu still tries her hardest and puts a lot of effort into her activities, like constantly practicing her singing every day and getting better at reading sheet music. After talking with Miku Maekawa during a job, Koharu ultimately realized that she’s not just watching idols on stage anymore, she’s an idol herself.

Being the sweet girl that she is, Koharu is very good at giving compliments. In Koharu’s very first 5koma, she is shown giving compliments to the normal trainer, saying that she looks very cute in casual clothes. In the U149 manga, Koharu helped to reassure Chie Sasaki about her good leadership qualities when the other girl was feeling unconfident about how she was leading their group. She also complimented Haru Yuuki about how she looks good in cute clothing when they were dressing up as characters from Alice in Wonderland for a job. She called adult idols like Shin Sato and Miyu Mifune amazing since they can do their jobs as idols so tirelessly without ever wearing out. Koharu says that everyone at the production, from the idols to the trainers to the producer, are all precious parts of her life. In fact, Koharu is so sweet and gentle that she can be seen literally radiating an aura of flowers around her at times in the U149 manga. Koharu is also very thoughtful, and she often thinks of the other idols even when she isn’t with them. She once filled up a magazine about sweets with sticky notes written about how much she wanted to eat the sweets and visit the cafes shown inside with fellow idols like Kaoru Ryuzaki and Momoka Sakurai.

Koharu has also been shown to have an interest in drawing. She says that she enjoys drawing because it’s a way to give the thoughts and dreams in her head shape and allow her to share them with others. In her unawakened SSR, she is shown illustrating a design of the dress that she goes on to wear in the awakened form of the card, and she says that the drawing is a way to capture her hopes and dreams. In one of the 4koma U149 comics, she is shown with a sketchbook where she draws pictures of all the dresses she would one day like to wear on stage, and attempts to design a leopard-print outfit for Risa Matoba. Her designs tend to be very cute and frilly, and some are even sweets and fruit themed.

Never leaving Koharu’s side is her beloved pet iguana Hyou-kun, who she loves so much that she incorporated him into her signature. She often refers to him as "the knight who protects the princess," and doesn't like to let go of him even when she's doing tough dance lessons. Koharu looks up to him, and once wanted him to show her how to do pull-ups with his tail. Koharu once wanted to make Hyou-kun into a cute wedding bouquet, but she realized that it wouldn’t be a good idea to have him get thrown in the air. In an April Fools event in Cinderella Girls, where he was voiced, Hyou-kun told the producer he would protect her. Hyou-kun also loves Koharu very much, and didn’t want to be separated from her during a photoshoot that she was nervous for.

She was the fifth idol to join the "Little Marching Band Girls" unit and uses a set of handbells that she used to play a samba tune with Kaoru Ryuzaki and Chika Yokoyama. She enjoys being a part of the marching band very much, and enjoys marching energetically with Miria Akagi.

Game Appearances

To view Koharu's Cinderella Girls and Starlight Stage card data, click here.

THE iDOLM@STER Cinderella Girls

Koharu first appeared on March 15th, 2012 as one of the new idols in the game.

Koharu appears in the Events listed below:

THE iDOLM@STER Cinderella Girls Starlight Stage

Koharu appeared on September 6th, 2016 in the game.

Koharu appears in the Events listed below:

Media Appearances

Song Discography

Recorded Solo Songs

Recorded Solo Songs
Song Classification CD
Shine In The Sky☆ Koharu Solo Ver. THE IDOLM@STER CINDERELLA GIRLS U149 ANIMATION MASTER 01 Shine In The Sky☆
I'm a Little Princess ~Ohoshisama ni Onegai~ Image Song THE IDOLM@STER CINDERELLA GIRLS U149 ANIMATION MASTER 04 Zero to One!!
Onegai! Cinderella Koharu Solo Ver.
Doremi Factory!
Yorimichi Little Star TV Anime "THE IDOLM@STER CINDERELLA GIRLS U149 Special Talk Event ~Twinkle Party~" Venue Original CD
Zero to One!! THE IDOLM@STER CINDERELLA GIRLS UNIT LIVE TOUR ConnecTrip! Ishikawa & Yamagata & Iwate Peformances Original CD

Recorded Group Songs

Recorded Group Songs
Song Classification CD Sung With
Good Day Good Night Group Song THE IDOLM@STER CINDERELLA GIRLS U149 ANIMATION MASTER 05 Good Day Good Night
Doremi Factory! Group Song
Watashi Otogibanashi M@STER VERSION - Fabula Folio

Trivia and Fan Culture


  • Koharu was voiced through the U149 anime adaptation.
  • Hyou (ヒョウ), the name of her pet, means "leopard".
  • Koharu loves all types of animals, and is totally fine with having a large snake resting on her shoulders. She is also comfortable with bugs.

Character Gallery


Cinderella Girls Cards

Starlight Stage Cards

SR cards

SSR cards