Koi☆Kana (恋☆カナ; Is This☆Love?) is the debut single for Tsukishima Kirari starring Kusumi Koharu (Morning Musume). It was released on July 12, 2006 in limited and regular. The limited edition came with a Chao special edition Kirarin☆Revolution book. Koi☆Kana was used as the first opening for the anime Kirarin☆Revolution, and SUGAO-flavor was used as the first ending theme for the same anime.
The Single V was released on July 26, 2006. It sold 8,832 and peaked at #5 on the Oricon charts.