2017年に東京で Zuma を中心に結成。「Disgusting Music」を標榜し、NYハードコア/デスメタル/ドゥーム/スラッジなどに影響を受けた独自のスタイルを打ち立てる。活動初期より多くのデモやEPのリリース、そして国内の週末だけで年間50本を超えるペースで活動を続け、2020年に Daymare Recordings より 1st album 「A Dying Truth」をリリース。日本のヘヴィハードコア史に残る、1,000枚以上の CD 国内売上を記録。また、本作は北米盤がカナダの Profound Lore Records よりリリースされたことがバンドの欧米での認知度を一気に高めた。ここから活動のメインを徐々に海外に移していき、2022年以降は全世界でのツアーを含む年間100本以上のライブをコンスタントに続ける。

　2023年、2nd album 「Untopia」をリリース。よりデスドゥームに寄ったスタイルを提案し、現在までにレコードは5,000枚近くを売り上げている。しかし、このリリース直後に大きなメンバーチェンジがあり、以降 Zuma が Gt&Vo を担い4人編成で活動していくことになる。

　2024年にレーベルを米国の Closed Casket Activities へと移し、同年11月に EP 「Profane Usurpation」をリリース。本作ではよりデスメタル、特にスウェディッシュデスに傾倒したスタイルとなった。同年は Dying Fetus の USツアーの前座として4週間北米を周るなど、従来のハードコアシーンのみならず、よりメジャーなメタルシーンにも食い込み始めている。

　現在は2026年末の 3rd album リリースを目指し、過密なツアー日程の合間を縫って鋭意曲作り中。

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KRUELTY was formed in Tokyo in 2017 by Zuma. Operating under the banner of “Disgusting Music,” the band quickly established a sound of its own, drawing from New York hardcore, death metal, doom, sludge, and other forms of extreme music.

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From the beginning, KRUELTY maintained an intense pace, releasing numerous demos and EPs while playing more than 50 shows a year on weekends across Japan. In 2020, the band released their first full-length album, A Dying Truth, through Daymare Recordings. The album went on to sell over 1,000 CDs domestically, becoming a landmark release in the history of Japanese heavy hardcore. Its North American release through Canada’s Profound Lore Records also helped bring the band to a much wider audience in the West.

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From that point on, KRUELTY gradually shifted the focus of their activity overseas. Since 2022, the band has consistently played over 100 shows a year, including tours across the world.

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In 2023, KRUELTY released their second album, Untopia. The record pushed the band further into a death-doom-influenced direction and has sold nearly 5,000 copies on vinyl to date. Shortly after its release, however, the band went through a major lineup change. Zuma took on both guitar and vocal duties, and KRUELTY has continued as a four-piece ever since.

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In 2024, KRUELTY signed with the U.S. label Closed Casket Activities and released the EP Profane Usurpation in November of the same year. The release saw the band leaning even further into death metal, particularly the sound and spirit of Swedish death metal. That year also marked another major step forward for the band, including a four-week North American tour supporting Dying Fetus. Through these activities, KRUELTY began to break beyond the hardcore scene and make a deeper impact within the broader metal world.

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KRUELTY is currently working on their third full-length album, aiming for a late 2026 release, while continuing to write new material between an increasingly demanding international touring schedule.