Naver join oda class in any condition.. they teach you good in first 3 days , after enrollment they teach too bad and worst.. when you ask for refund they try to avoid you... They are stop pickup call... They put you in ignore list.. naver reply... So don’t join oda class in any situation.... It’s a trap only.... I have sent many mails and approx 100+ call which all are in answered..... So please don’t join....