A lot is changing with the future of Kingdom Hearts, that much is made clear immediately with the latest trailer. During the 20th anniversary celebration of the series, Square Enix took the opportunity to finally unveil gameplay for the previously teased Kingdom Hearts 4. In it, players finally got their first substantial look at Quadratum, as well as Sora's fate after Kingdom Hearts 3's secret ending. Sora is sporting a new look alongside a seemingly new ally, as the Heartless invade the World of Fiction, and the spry Keyblade wielder shows off some brand-new moves to take down the Darkside Heartless. As for who this new girl is who visits Sora in Quadratum, some fans may have been surprised to see her.