Biography
There are four musicians with the name Niku on:
(1) - Furry Brakecore/Mashcore artist from the united states, usually stylized as NiKU
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(2) - Alternative/indle band with 4 members formed in 2019
(3) - Apparently a underground Hip-hop/Trap band/duo from somewhere
(4)- A three-person creator unit consisting of composer Chinozo, singer Kanane, and animator Gacha. (J-pop)
Biography text from Last.fm, available under CC BY-SA.