This stalk comes from the second-dimensional game "Half-dimensional". In this game, the pink kitten is a very cute character image. Because of its cartoon image and cute characteristics, it has been widely spread by netizens and has become an online buzzword.
In games, pink kittens are usually used to describe a specific type of girl. They usually have pink hair and cat ears, and are considered as very cute and cartoon images. On the internet, many people will use the stalk of "pink kitten" to describe their preferences or express their appreciation for this kind of girl.