Hatsukoi Sunrise / Just Try! / Uruwashi no Camellia (初恋サンライズ/Just Try!/うるわしのカメリア; First Love Sunrise / Just Try! / Beautiful Camellia) is Tsubaki Factory's major debut single. It was released on February 22, 2017 in 7 editions: 3 regular and 4 limited. The first press of the regular editions include a random trading card of 10 kinds depending on the jacket (30 in total). The limited editions include an event lottery serial number card. "Hatsukoi Sunrise" was the February 2017 opening theme for music-ru TV and the March 2017 ending theme for Love Chu Chu.