That's a very very low bar cause every comic is the same... Some fat girl has a magic power and trades weight with another girl, it get's very old and isn't very good
I'm a bit disappointed that it was reduced to simple sadism.
As a story, it would've been more interesting if the once-fat girl chose to either forgive (I.E stop tormenting her), or told her that there was no way to turn back, and she'd have to get thin the old fashioned way, and that's what happened instead of just forcing her to get fatter and fatter.
It’s a bit formulaic, but I love the formula.. a fat plain girl obtains the power, be it technology or magic, to become thin and beautiful at someone else’s expense before the comic starts, or partway I , , they then choose their target, either someone they envy, a victim, or a bully, then pass their fat and ugly features onto them while taking their thin appealing features in some traumatizing way. Usually leaving the victim in worse shape that the stealer. Then the attribute thief sets some measure in place that makes everyone else in the victims life not care, because to them, she was always in that fat shape. Some stories even add the bonus of giving the victim false hope, when the attribute thief just wants to make them fatter or ruin them.
It’s not just the weight gain, but the sadism, the crushed pride and false hope, the drastic theft and transformation. And the fear and despair in the victims eyes, when they see that no one can or will help them, let alone believe them, while the thief move up in life, gaining, occasionally stolen friends, popularity, etc.
I could probably read this plot forever, it’s my dan Harmon wheel, lol.