A new trend has surfaced, urging social media users to "look between 'X' and 'Y' on keyboards". The trend originates from a meme on imageboard website 4Chan in 2021 featuring a character from anime series 'K-On!', accompanied by the directive to "look between t and o". Users discovered letters y, u and i, spelling out "Yui," a character from 'K-On!'.