What happened during the first year of Battle Academia?

“Now in her second year at Durandal Academy, Lux has been hardened by the harrowing trials, losses, and betrayals that punctuated her freshman experience. Following the climactic clash with a certain Rogue God-Weapon, Lux has mastered her powers and risen to take her place as head of the Sorcery Club, as well as the new class president." -Bio for Prestige Edition Battle Academia Lux This is really god damn interesting. There’s no colour story for Battle Academia, no animation, nothing and yet they reveal something happened into the first year? I need more context!!!
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