Hitomi no Naka no Galaxy / Hero was just a promo single for their best album. It wasn't meant to be on One.

ayupi;; I totally agree. D"A"L when I first heard it I was like: WTF. That's it?! But now I'm slowly starting to like all the songs more. Do my best is so much fun! I love it to death~

One had really strong album tracks, Yes? No? will forever be one of my favorite and Subarashiki Sekai because in the Sakurap he says "Homies"~