Kimochii is a casual Japanese expression meaning it feels good, and its drawn out form has long been used in anime, games and online clips for comic effect. This version is tied to Yakuza, the long running Sega action series known in Japan as Ryu ga Gotoku, and to Kurohyou, its spin off. Shared on soundboards as a short standalone reaction, the clip spread because it needs no context, the stretched shout alone conveys bliss, lust or shameless satisfaction, making it reusable across gaming edits and memes.