Kosaka Yuka is a Japanese entrepreneur, child counselor, and former entertainer born in Kanagawa, Japan.

She began her career as a gravure idol with A-team (エーチーム), later known as A-PLUS, from 2004 to 2009. On August 29, 2015, she adopted the professional name Kosaka Yuka (小阪有花) for her activities in childcare and authorship but reverted to her original name starting January 2022.

Kosaka was scouted in Shibuya and signed with A-team. In April 2004, she reached the semifinals of "Miss Magazine 2004" as one of the 16 contestants, eventually winning the Miss Magazine Grand Prix on July 5 of that year.

In 2008, Kosaka formed the lip-sync idol unit "Peachy's", originating from the Fuji TV variety show "~Joodeki! POP COMPANY~ POP-ya."

Updates on her personal blog ceased after March 16, 2009, and on April 29 of the same year, Tokyo Sports reported her retirement from entertainment. Although there was no official announcement from her talent agency at the time, news sites reported on November 6 that she had unofficially announced her intention to marry via her personal blog.

In her autobiography published in 2012 and subsequent interviews, Kosaka discussed her retirement from the entertainment industry due to depression and personal instability following a breakup.

In 2015, Kosaka founded "Revival Meeting Co., Ltd.," a company focused on supporting beauty enhancement. She also established the "With Mama Nursery" in Ichihara, Chiba, Japan, in April 2015 and served as a producer until the end of her contract in July 2016, concurrently working at the nursery.

On January 6, 2022, Kosaka announced her marriage to former actor Tochihara Rakuto. Following her career in childcare consulting, she founded "cheer lead," a talent development company aimed at aspiring celebrities.

(Source: MyDramaList) Edit Biography