Rui Fan

Basically a new way to call someone cringy and annoying. Rui fans tend to be found obsessing over Rui Kamishiro who is a popular character from the game Project Sekai. You mainly see them on TikTok and should avoid them at all costs. ‘Rui fan’ should and can literally be used as a slur

Person 1: I have the most invalid opinions ever and I am annoying and disgusting!!

Person 2: So you are a Rui fan?