What makes Hiiragi by Do As Infinity notable?

'Hiiragi' features the titular track which became a significant hit, reaching high positions on Japanese charts and solidifying the duo's popularity during the era. The album showcases their signature style while also reflecting the evolving soundscape of J-pop in the early 2000s, making it an important entry in their discography. Released on November 6, 2003, 'Hiiragi' marked Do As Infinity's return after a brief hiatus following their previous album 'Gates of Heaven'. By this time, they had already established themselves as a staple within the J-pop scene, known for their emotive vocals and engaging compositions.