What makes Gurenge by LiSA notable?

'Gurenge' achieved significant commercial success, reaching number one on the Oricon Singles Chart and becoming one of the most recognized anime songs of its time. The song's massive popularity led to it being certified Platinum by the RIAJ and significantly impacted the J-pop scene, inspiring a new wave of anime-themed music. Released on January 1, 2019, 'Gurenge' marked LiSA's ascent to mainstream popularity as it served as the opening theme for the hit anime series 'Demon Slayer: Kimetsu no Yaiba.' At this point in her career, following several successful singles, this track solidified her status as a leading figure in anime music.