Keiko

There's something quietly remarkable about KEIKO's trajectory — she spent years as one-third of Kalafina, a vocal group where Yuki Kajiura's production was so enveloping that audiences sometimes heard the blend before they heard the individual voices, and yet when you listen closely, KEIKO's voice is the one with the most gravity to it, that low, earthy anchor that keeps the whole thing from floating off into pure atmosphere. When Kalafina dissolved in 2018, a lot of fans held their breath. Would she find her footing alone? And then Lantana landed in 2020 on Avex Trax, and the answer was pretty decisively yes — still lush, still serious, but fully hers. She's a singer who doesn't chase trends or clutter her work with noise.

This take was written by generative AI, one per person, from publicly reported facts (editorial policy). It is a reading of the record, not reporting.

Keiko (stage name KEIKO) is a Japanese singer born on December 5, 1985, in Tokyo, Japan. Active since 2005, she was a member of Yuki Kajiura's vocal group Kalafina until 2018 and has been represented by Tristone Entertainment and released music on Avex Trax since 2020.

Name (English)

Keiko

Name (Japanese)

KEIKO

Reading

けいこ

Born

December 5, 1985 (age 40)

Origin

Tokyo, Japan

Occupation

Singer

Zodiac / Chinese zodiac

Sagittarius / Ox

Agency

Tristone Entertainment (2020 -)

Active years

2005 -

Works summary

Works

71 (2001–2023)

By year (titles with a known year)

2001: 1, 2005: 1, 2006: 2, 2007: 2, 2008: 2, 2009: 4, 2010: 3, 2011: 4, 2020: 6, 2021: 7, 2022: 6, 2023: 4, year unknown: 29

Debut work

Star Light

Filmography / notable works

• Official sitehttps://avex.jp/keiko-singer
• Instagramhttps://www.instagram.com/keco.choco/
• Xhttps://x.com/KeikoStaff
• Wikipedia (Japanese)https://ja.wikipedia.org/wiki/KEIKO%20(1985%E5%B9%B4%E7%94%9F%E3%81%AE%E6%AD%8C%E6%89%8B)
• Wikidatahttps://www.wikidata.org/wiki/Q851542

Tags

• From Tokyo
• Singer

Last updated

October 18, 2026

Only publicly available facts are listed; non-public or unconfirmed items are omitted. Base data was compiled from Wikidata from June 2026 onward; ages are recalculated daily and deaths are checked against Wikidata on an ongoing basis. Works and profile fields sourced from Wikipedia reflect content as of 2026-08-26. English text is machine-assisted (facts translated by Sonnet, "My Take" written by Opus 4.8). The Japanese page is the source of record.