She joined in the early 1990s, where her first tracks were for the Final Fight series, and would contribute music for the Mega Man series and Breath of Fire II. She was credited for her earlier work by just her first name (Yuko), but has also gone by the alias pop'n. She usually worked with Setsuo Yamamoto. Despite having left the company, Takehara is among those who contributed a theme for Mega Man 10.