Keiko Kubota

About Keiko Kubota

Keiko Kubota, known professionally as KEIKO, is a Japanese Singer. She is celebrated for her distinctive, deep contralto voice, often described by critics as a "charming, ghostly veil" that creates a captivating contrast with her delicate appearance.

Keiko started her musical journey in 2005 as part of the rock duo Itokubo. Later that year, the legendary composer Yuki Kajiura recruited her for her vocal project FictionJunction. Performing as FictionJunction KEIKO, she recorded memorable tracks for anime series, most notably "Kaze no Machi E" for Tsubasa RESERVoir CHRoNiCLE. And as part of the group, songs for anime like Mobile Suite Gundam SEED, Pandora Hearts, Demon Slayer: Kimetsu no Yaiba.

In 2007, Kajiura selected Keiko to become a pillar of the legendary vocal group Kalafina. Thanks to her deep low register and commanding stage presence, Keiko often took center stage during live performances. Together, the group achieved international success, performing iconic theme songs for major anime franchises such as: Fate/Zero and Fate/stay night: Unlimited Blade Works, Puella Magi Madoka Magica, Black Butler (Kuroshitsuji).

Following Yuki Kajiura's departure from Space Craft Produce, Kalafina disbanded in 2018. Out of artistic loyalty to Kajiura, Keiko left the agency shortly after. In May 2020, she signed with the major record label Avex Trax to relaunch her career as a solo artist. She debuted with the digital singles "Inochi no Hana" and "Be Yourself", and has since continued to release solo albums and perform live concerts.