What makes Hitomi no Naka no Galaxy/Hero by Arashi notable?

The album features the hit single 'Hero', which became an anthem for perseverance and was widely embraced during its release. It topped the Oricon charts, further establishing Arashi's dominance in the J-pop scene and contributing to the group's growing influence across Asia. When 'Hitomi no Naka no Galaxy/Hero' was released in August 2004, Arashi was solidifying their status as one of Japan's leading boy bands, following their breakthrough with the hit single 'A.RA.SHI' in 1999. This release came shortly after their successful album 'How's it Going?' and showcased their evolution into a more mature sound while still embracing their pop roots.