Kind of moody and obsessed with anything cute. Falling in love with one of Kanade's songs found at random online, Mizuki created a music video for it, which in turn caught Kanade's attention. That's how Mizuki became the group's animator. Friends though they may be, Mizuki keeps a big secret from the rest of the group.
(Quoted from Sekaipedia - https://www.sekaipedia.org/wiki/Akiyama_Mizuki)

For Mizuki, we're looking for vocals that are on the fence between male and female, though closer to the female side, if that makes any sense :>.
Please send me two clips: one of your normal, speaking voice using the lines provided and more if you want, and one of your singing - of any song Mizuki is in.
Mizuki is around an alto!
Vocal reference: https://www.youtube.com/watch?v=Om4PbCNVsGA&t=0s
Speaking Reference: https://www.youtube.com/watch?v=WWCGUEKDjPY (not the only one but i LOVE THIS) 2nd: https://www.youtube.com/watch?v=bLNyx0Wvgh4&list=PL6hkMKFF6IpsE78AMA4am8HVZuaUQ7k-f