The song "LoveLive! Sunshine!! Watanabe You First Solo Concert Album" from Aqours - Suddenly GIRL lyrics is a cover of the song "LoveLive! Sunshine!! Watanabe You First Solo Concert Album" from the album "Beginner's Sailing" by the band.
『渡辺曜(斉藤朱夏) from Aqours - 突然GIRL 歌詞』収録の『LoveLive! Sunshine!! Watanabe You First Solo Concert Album 〜Beginner's Sailing〜』ジャケット