Rebel Without a Cause (Patreon)

This young lady, being the sort to do such a thing, decided to attempt the demon summoning ritual from the ancient looking book she bought. When the ritual actually summoned a demon that would grant her a boon in exchange for her soul, she decided to take the demon up on the offer. But, in her state of shock, she didn't adequately word her wish, so what should have been "the strength to defeat my enemies" became "strength till my enemies are defeated." The problem with this wording, she would later realize, is that she didn't actually have any enemies, at least that she could think of, so she might just keep growing larger and more muscular until she finds somebody to snap in half. Maybe a little more size first.