Seiko Oomori in Yokkaichi

Seiko Oomori is a Japanese singer-songwriter, born in Matsuyama in 1987, whose music covers J-pop, punk rock and acoustic songwriting. She established her solo catalogue with the albums Mahou ga Tsukaenara Shinitai and Zettai Shoujo, later recording “JUSTadICE” as an opening theme for the anime Black Clover. She began performing in Tokyo at Muryoku Muzenji, a small venue in Koenji, often appearing alone with an acoustic guitar. Her concerts later expanded to full-band arrangements, and in 2021 she presented a career-spanning performance at Nippon Budokan.