A SCAM! I sold mithril for Soul Crystals (Premium Currency) but was paid in BOUND GEMS. Youzu can never be trusted with its "pay-for-everything" game. Diligence means nothing as you progress because everything in endgame is in premium currency but there's no way to earn it. Edit: Youzu replied that they FREELY CONVERT it without notice. Good job, that's definitely a definition of a SCAM.