This Megumi Fushiguro vinyl figure is released by Funko in their POP! Animation x Jujutsu Kaisen vinyl figure series.
Funko POP! is a crossover vinyl figure series by Funko and other famous franchises such as Disney, Pixar, DC Comics, Marvel Comics, Simpsons, South Park, Uglydoll, etc. Each POP! figure is about ~3" to ~5" tall and crafted in a Japanese anime/manga super-deformed style (NOTE: due to the unique design of each character, the actual size of the figures may be smaller or bigger than stated).
The POP! Animation x Jujutsu Kaisen features characters from the hit Japanese anime/manga, which follows high school student Yuji Itadori as he joins a secret organization of Jujutsu Sorcerers to eliminate a powerful Curse named Ryomen Sukuna, of whom Yuji becomes the host.