This is after Legend of Zelda Tears of the Kingdom and RWBY Grimm Eclipse, after constant failures from Astor, Ganondorf and Salem, Emperor Hybrid decided to take matters in his own hands by bringing his Army to take over Hyrule and Remnant, Emperor Hybrid knows that the chosen ones that wield the Sacred Swords and stop him, so now Emperor Hybrid has chosen X as one of his Generals and successor, if Emperor Hybrid meets his demise, now Emperor Hybrid will stop at nothing to take over Hyrule and Remnant