Funny thing is the game works with ultra wide actually and is basically natively ultra wide but the devs added black bars to the sides of the screen for reasons I cannot begin to comprehend. I know this because my game has glitched a couple times so that those bars disappeared but they'll always show up again eventually
I don't get Japanese games doing stuff like this, is it pride? Is it stubborness? I guarantee you, no one outside of Japan cares, let my game take up my whole screen and give a damn pause button.