so you may be unaware of this but that's actually a really great observation!
one theory about a member of ExWHYZ is that Mikina may be related to the vocalist of Hitsujibungaku Moeka Shiotsuka, Mikina used to talk a lot about them and interesting enough despite being an idol she plays all the instruments of a band (guitar, drums, etc) she also says she has a sister but hasn't posted pictures of her, no solid proof but is interesting enough to point out
here Mikina in the picture above and Moeka below
