It is a flower brooch of Takashi Murakami's Kaikai Kiki.
Takashi Murakami Kaikai Kiki BTS New 8cm Rainbow Flower Plush Brooch
Takashi Murakami Flower Pillow - Finland
Kaikai Kiki Flower Keychain Flower Plush Rainbow & Black, multicoloured : Toys & Games
Takashi Murakami Rainbow Flower Pillow
Kaikai Kiki Flower Keychain Flower Plush Rainbow & White : Toys & Games
Available for sale from Toyol Gallery, Takashi Murakami, Kaikai Kiki, Takashi Murakami X Kaikai Kiki, Flower Pillow - Rainbow White (30cm) (2022),
Takashi Murakami, Kaikai Kiki, Takashi Murakami X Kaikai Kiki | Flower Pillow - Rainbow White (30cm) (2022) | Available for Sale | Artsy
Kaikai Kiki Flower Keychain Flower Plush Rainbow & White : Toys & Games
Takashi Murakami Flower Plush Pin 8cm new colors – Designstoresyd
Takashi Murakami Flower Go Walk Game Clear/Rainbow - US