Born in 1980, Yuni Yoshida graduated from Joshibi University of Art and Design before joining Onuki Design.

After working at Uchu Country, she became independent in 2007.

Her practice spans a wide range of fields, including advertising, CD artwork, video, and book design. Major works include art direction for Laforet Harajuku; stage productions directed by Hideki Noda such as THE BEE and Hanjin; CD artwork for artists including Kaela Kimura, Chara, and Gen Hoshino; and art direction for the Naomi Watanabe exhibition. She also contributes a regular series to the magazine So-en.

In 2016, she received the Tokyo ADC Award.