Founding and etymology
On November 4, 2015 - Twice released their official fandom name through their official instagram account. The girls posted a photo above to Instagram as well as the message, "A lot of fans liked 'Once,' 'Once and TWICE.' Once then TWICE. They seem to go together. If you love us even once, we'll repay you with TWICE our love. It's difficult to connect with people, and getting people to love is the most difficult of all. We'll work hard so that you can look at us once, and fall in love with us TWICE. Be with us until the end. We love you. <3."
There are two member types: ONCE Candy for Korea residents and ONCE Jelly for residents outside Korea.
Twice fans who joined the Once Candy will receive a membership card and ONCE SPECIAL PACKAGE. They have prior participation opportunities for Twice's solo concerts, broadcasting music programs and fan meetings. They also have exclusive zone on Twice Fan's .
Twice fans who joined the Once Jelly will receive a membership card and ONCE SPECIAL PACKAGE. They have prior participation opportunities for Twice's solo concerts, broadcasting music programs and fan meetings, only when additional spots are available after ONCE Candy's participation. They also have exclusive zone on Twice Fan's .
On August 1, 2017, Twice official Facebook released the official fanclub card and 2 badges for all Korean 'Once'. All 'Once' fans who joined the membership will also receive a wrist band and a "Twicezine" (Twice magazine).
On May 27, 2018, Twice official Facebook and Twitter released their notice of their 2nd generation recruitment of ONCE.
On April 24, 2017, Twice Japan Twitter released an official fan club card and Twice badge for all Japan 'Once'. The club card is designed by all Twice members. Japan Once members also will get up to date release news which will be released on every 21st of the month (it is called Once&Twice Day).
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