Kikkake wa YOU! (きっかけは YOU!; The Reason Is YOU!) is the debut single released by Kikkawa Yuu. It was released on May 11, 2011. The title track was used in a documentary movie of the same name that featured Kikkawa Yuu's road to debut. The single was available in 4 versions, Regular, Limited A, B and C and each limited edition features a different B-side, from the 3 different songs she performed as the opening act for the Hello! Project 2011 Winter ~Kangei Shinsen Matsuri~ A gana Live concert tour.