OnceZen Share definition Flag Someone who is a big fan of the K-Pop groups Twice and Nct. It is a combination of their fandom names Once and Nctzen. “Hey what do u call a Twice and Nct fan again?” — “A oncezen of course!” OnceZen by Kdyukika January 22, 2022 0 0 Get merch Get the OnceZen mug. Buy Now — $32.95 See more merch
