∞ (Unlimited)

Comes with an Obi, a lyrics sheet, 2x fold out poster inserts, and a sticker sheet. A-side of this album is a collection of all the A-sides of Ushiroyubi Sasaregumi's singles, while the B-side is all new songs. A1: Ushirogumi Sasaregumi A2: Banana No Namida A3: Zo San No Sukyanti A4: Nagisa no "..." A5: Waza-Ari! A6: Kashiko B1: ◎OR× B2: Hana Ichimonme B3: Pythagoras o Buttobase B4: Pi no Hideki B5: Unlimited