What does Ezreal DO in Demacia?

Under Jarro Lightfeather, he claims he's a "national hero", and with the release of Sylas, the bone he has to pick with him makes me question what it is he does over there exactly, since I imagine his magical gauntlet isnt exactly the most lowkey undercover weapon of choice in a mage-discriminatory region. Is there going to be a new lore story detailing his alter ego adventures, or can Riot give me answers already :')
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