Iikubo Haruna, Ishida Ayumi, Sato Masaki, Kudo Haruka - Hajimete no Happy Birthday!
C-ute - Sekaiichi HAPPY na Onna no Ko
Mano Erina - Doki Doki Baby
9th gen, 10th gen, and new S/mileage members opening dance + Mobekimasu's Busu ni Naranai Tetsugaku
Berryz Koubou - Be Genki! < Naseba Naru! >
Sources: 1, 2, 3
I'll add more if they show up.
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