What makes S by SID notable?

'S' received positive reviews for its energetic sound and lyrical depth, reaching notable chart positions in Japan. The album helped SID cement their status in the J-rock scene and contributed to the resurgence of alternative rock in Japan during this period. In 2012, SID was transitioning into mainstream recognition following their earlier successes. 'S' marked a significant point as it was their first studio album after several successful singles and EPs, solidifying their position within Japan's alternative rock scene.