In Astria Ascending, speak with Rumeh at Peyska Spring after making Eko a Wushu to obtain The Wushu Regime side quest.
Step One: Defeat 5 water priestesses
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Step Two: Defeat 10 fire-horses
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Step Three: Defeat 15 small ice warriors
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Rewards: Asellus x1, Omni Ether+ x2, Angel Kiss x1 and 5,000 Lums