Mayu, in my opinion, sounds exactly like CUL and VY1 and such. all those v3 females sound so almost exactly the same. Any bank that sounds like them, perhaps with a slightly different consonant pronunciation, can sound like Mayu.
Eh, maybe Cinnamon Ani Usa is like Gachapoid? Of course only when Gachapoid is singing in a mid to high range, Cinnamon can't go as low. But both have that high, nasally male tone, though Cinnamon has nasalier/stuffier consonants.