Commission.
"Mizu" belongs to the client who requested her being one of smol ded's "pets".
Smol Ded sure has a lot of fans recently.
Comments
Big girls who kick the ass of anyone you want while being your literal slaves are just owed to you for that massive thing, naturally, it's only fair that they give back after you give them an object of worship to devote themselves to!
This character is hot as fuck, too, frankly, wouldn't mind seeing them more in the future from the commissioner!