interjection
it's here!; it's happening!; yes!
Internet slang exclamation used when something long-awaited finally arrives or occurs. Derived from 来たこれ.
推しの新曲発表!ktkr!
My favorite artist's new song is announced! It's here!
待ってたゲームの発売日だ。キタコレ!
It's the release date of the game I've been waiting for. It's happening!