第 4 集: 魔法、莫尼和鈴湖尋求鋼琴家玲奈的幫助，為日落舞台比賽創作一首歌曲。
2020年11月20日 播出
To gain popularity for their unit and become eligible for the elite Sunset Stage Competition, Maho, Muni, and Rinku decide to enter a contest for a professional unit to choose their melody for their next song. The only problem is, nobody knows how to compose. As a way to speed up their process, they ask the ever so talented Rei-chan, a pianist, to help compose their next song.