Sick² is a prominent visual kei band established on September 27, 2011, originally operating under the name DEVI+TEC before rebranding in 2013. Their distinctive sound fuses elements of oshare kei and menhera kei, marked by an intriguing juxtaposition of lively melodies and somber lyrical narratives. In a 2022 interview, the band articulated their musical identity as embodying “pure chaos” and “digital rock,” underscoring their innovative contribution to the visual kei genre.