Curate, connect, and discover
The Mafuyu bug dance video posted to the official TikTok account suggests that Mizuki is the one encouraging the other 25-ji, Nightcord de. members to film these videos. Her gesture to Mafuyu could alternatively suggest that she was the one who came up with the choreography, and is complimenting Mafuyu for getting it right. It's very possible that these are simultaneously true.