ライジング・サン・ロックフェスティバル
Yamaguchi had started collecting ideas for "Kikuuiki" in February 2009, less than a month after the release of "Shin-shiro". The band spent most of 2009 experimenting on the song "Aruku Around", and performed the song at their summer festival appearances at Rock in Japan and Rising Sun Rock Festival, to see how the audience would react to the song's different approach. After "Aruku Around" was released as a single in January 2010, it became a commercial and critical success. It reached number three on Oricon's single charts, and was praised for its strong arrangement and Yamaguchi's poetic lyrics. The single's success surprised the band, who never considered it could become as popular as it did.