Let's Do Summer! (1)

IDOLiSH7 is performing at the Summer Island Music Festival, an outdoor concert held at a resort featuring top artists. TRIGGER, also attending the concert, was planning to perform the single "Let's Do SUMMER!” However, because it was originally IDOLiSH7's song, the head of Yaotome Production Company did not approve of this song choice. Riku discovers this situation and...