(Amazing commission from  Caste she absolutely spoiled me by drawing this up for me)

A bit after meeting Mute, and hitting it off as friends, Mika expresses an interest to try and get into magic.

After a few frustrating failures at trying to break into the field, Mute brings Mika a gift: a corset that Mika immediately assumes will give her some magic powers.

She didn't think anything was funny about the corset until her boobs comically bulged out of her chest as Mute tightened it.

The prank gift Mute got started transforming her into a very familiar kitsune, giving her what she wanted, in a way: She now had the abilities of the best magic user she knew :3