o.j.o is a 15-year-old singer-songwriter currently living in Tokyo. She launched her music career in March 2024 with her debut digital single “Bah!” at the age of 13. In September of the same year, she appeared on Japan’s prominent YouTube music show “FLASH THE FIRST TAKE” as the youngest artist in the show’s history.In February 2025, she released her first EP, “010,” digitally, and unveiled a “Dancing Lyrics Video” that fused her dance performance with ASCII art. In October of the same year, she released her third digital single, “Blam!” (the Official Festival Song for the 38th Tokyo International Film Festival), which marked her first tie-in track. Meanwhile, after an unprecedented major breakthrough—singing four songs for the soundtrack of the third season of the anime “[ Oshi no Ko]”—she participated in “Beat LAB Vol. 6” at Zepp DiverCity Tokyo in March 2026, marking her first live performance as o.j.o. She released the new song “One day,” which she performed at the event, digitally that same month. Her latest track “NIGHT OWL,” which is her first foray into alternative rock, was just out in June.