Grand Blue is a comedy manga and anime about a university diving club whose members are far better known for their wild drinking parties than for diving itself. Kanpai, the Japanese word for cheers, opens those gatherings and has become shorthand for the series' chaotic, good-natured excess. Clips of the toast circulate in anime edits, party montages and drinking memes, where the shout instantly signals that a sensible evening is about to go off the rails. Its appeal endures because the joke is simple, instantly recognisable and easy to reuse.