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God's Guide
Go talk to Innacus in Atlantis.
Show Quest Info
Introduction
It's very important to know how to expand your bag in BOI.If you charge 1500 ZEN or more, Innacus in Atlantis will expand your bag when you reach LV30 and LV60.
NPC Dialog
Now you know that I can change your appearance.Pay a visit to Innacus, she knows how to expand your bag.