Career
She belongs to the show-business production Burning Production, K.K. (株式会社バーニングプロダクション) and used to be belong to Platica Incorporated.
Her show-business name from July 2007 to March 2008 was Yumi Uno (宇野 優美). In 2002, Kobayashi debuted as an exclusive model of Loveberry, a fashion magazine for Japanese low-teen girls and published by Tokuma Shoten. She modeled for the magazine until 2005.
In the next year, Kobayashi transferred to Face Network Company, Limited.
(株式会社フェイスネットワーク) and also debuted as a gravure idol. Then, in 2007, she took part in a model audition for the Kobe Collection, or simply, Kou-Kore.
Kobayashi became a finalist but without any prize. Soon afterwards, on July 31, she renamed her family name from Kobayashi to Uno, which derives from the president and Chief Executive Officer of USEN Corporation, Yasuhide Uno (宇野康秀).
In April 1, 2008, Platica Incorporated. was independent from Face Network Company, Limited., subsequently Kobayashi got to belong to Platica Incorporated. and she renamed her family name again back to Kobayashi.
In 2008, Kobayashi participated in a model audition of the Kobe Collection and became a finalist again. However, she did not obtain any prize. In late 2008, Kobayashi was elected as the 23rd Asahi Beer Image Girl, on which she served until December 2009.
Thereafter, in April 1, 2010, Kobayashi transferred to Burning Production, K.K.
She has attended the Tokyo Girls Collection twice as a model.
I.e. 11th Tokyo Girls Collection of 2010 Autumn/Winter and 13th Tokyo Girls Collection of 2011 A/West.