Kikuuiki (English: Mixing Airspace; stylized as kikUUiki, Japanese pronunciation: [kikɯ:iki]) is the fourth studio album by Japanese band Sakanaction. It was released on March 17, 2010, through Victor Entertainment. In January, the album was preceded by the single "Aruku Around", which was met with the greatest commercial success for the band since their debut, reaching number three on Oricon's singles chart. The album was nominated as one of the finalists for the CD Shop Awards, and was lauded by critics for its cohesive sound and literary lyrics. At the time of release, it was their most commercially successful release since their debut, reaching number three in Japan.