CUE!

Light (1x18)

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The day before the live show where Project Himmel's new unit "LUNA ω rabbits" are revealed, Mei gets a slight fever and has to stay in bed. Worried about her, Satori and Rinne take turns visiting and talk about a side of Rie that Mei didn't know yet. Having been together with Rie since her childhood, hearing this warms Mei's heart.