What makes Sappukei by Number Girl notable?

'Sappukei' was well-received, earning acclaim for its raw energy and experimental approach. The album helped establish Number Girl as pioneers in the Japanese rock scene, influencing future bands with its unique blend of styles and powerful lyrical content. 'Sappukei' is Number Girl's third album, released at a time when they were solidifying their presence in the Japanese alternative rock scene. Following the critical success of their previous album 'School Girl Distortional Addict,' this record showcases a more refined yet chaotic sound, reflecting their growth as musicians.