I am fat, she is slim😥, I am ugly, she is pretty😭

This is a long-form webcomic (by the artist “Meng”) that tells a darkly humorous, exaggerated story about looks, dating, self-improvement, and double standards. It’s basically a satirical “blackpill” style comic with a twist at the end.
Here’s the full story, panel by panel:

A plain-looking, slightly chubby short-haired girl sees a spiky-haired guy she likes.
The guy completely ignores her because a much hotter, curvier blonde girl is flirting with him and lighting his cigarette.
The plain girl gets jealous and angry watching the hot girl cling to “her” guy.
She decides to “glow up”: she starts working out hard (running, gym, yoga).
She gets extremely fit, slim, and athletic — basically becomes very attractive.
Now buff guys are chasing her and giving her gifts, while the original spiky-haired guy is left broke and dumped.
She brutally rejects and physically punishes any guy who approaches her that she considers ugly or beneath her (kicks one guy into glass, etc.).
She discovers “looksmaxxing” and the blackpill online (the comic literally shows her learning about it).
She becomes bitter, starts smoking/drinking/gambling, gets pregnant, has an abortion, gains all the weight back, and returns to her original plain/chubby appearance.
She goes back to yoga classes and healthy habits… but now she’s doing it while the hot girls party and the guys ignore the “ugly” girls.
Title card: “Ugly Duckling” with the line “Don’t worry about those fluffy yellow morons, they’ll never get to be swans.” (mocking the famous fairy tale)
Years later: the original spiky-haired guy is still single and sad. The hot blonde girl dumps him again.
The plain girl (now back to being chubby) sees him looking depressed, feels bad, and decides to comfort him.
Final panels: she gives him a small gift/box of chocolates. He looks surprised and touched.

The punchline / moral (delivered with savage irony):

When she was ugly, he ignored and humiliated her.
When she became hot, she rejected and humiliated him (and every other guy she deemed unworthy).
When she became ugly again and he was at his lowest, she was the one who showed him kindness.
So in the end, the “ugly duckling” never became a swan… but she still ended up with the guy, while the actual “swan” (the hot girl) stayed shallow and alone with her party lifestyle.

It’s a very cynical take on looks, dating double standards, revenge, and how people’s behavior changes depending on their own attractiveness — but with a tiny bittersweet “nice guys/girls finish last… together?” ending.
Very popular in certain online circles for how brutally it points out hypocrisy on all sides.