Hazuki (on Guitar), Kotono (on Vocal), Kanade (on Drums), Li-sa-X (on Guitar)

【Biography】
Formed in December 2022. Rock unit consisting of four Japanese women.

Two of Japan's leading young female shredders Li-sa-X and Hazuki who lost their singer in the previous Li-sa-X BAND met singer Kotono with roots in pop and dance music. The three of them collaborated on a cover of Polyphia's "ABC" on YouTube and saw so much potential in each other that they decided to form a band.

In February 2023, the band performed at the Oddball Festival in India, even before the official release of their music. They performed in three cities with The Aristocrats, Bloodywood, and others.
In May, they released their first EP "Deep Indigo" as an independent production, followed by their second EP "Deep Love" in October.

In October, the first solo concert in Japan was held at Shibuya Stream Hall and was a great success. (*Released as Blu-ray)

In December 2023, the band's first anniversary, drummer Kanade, who has been supporting the band's live performances for some time, joined as an official member. With this addition, the band now consists of four members.
KOIAI has two meanings in Japanese: dark indigo and deep love.

Polyphia「ABC」をYouTubeコラボという形でカバーしたことがキッカケとなり、Li-sa-X、 Hazuki、Kotonoの3名により2022年12月に結成。

2023年2月には正式な音源リリース前にも関わらず、インドのフェス Oddball Festival に出演。 The Aristocrats、Bloodywoodらと3都市で公演を行った。

5月には自主制作にて1st EP「Deep Indigo」を、10月には2nd EP「Deep Love」をリリース。

10月に渋谷ストリームホールにて国内初ワンマンライブを開催。(Blu-ray化され発売日に即完)

バンド結成1周年となる12月には、かねてよりライブサポートで参加していた佐藤 奏が正式メンバーとして加入。4名編成となった。