I haven't played I Am Setsuna since around the time the Switch was launched, mostly due to plunking nearly sixty hours into The Legend of Zelda: Breath of the Wild. However, with that story completed it's about time I dived back into I Am Setsuna and just in time for an update to the game that sadly I'm not quite ready for yet. This Thursday April 13th, Square Enix will be releasing a Nintendo Switch exclusive update that adds a new challenge to the game: the Temporal Battle Arena.
Upon completing the game you can enter the Temporal Battle Arena from the Last Lands and challenge other parties that have also completed the game. Kind of a PVP arena of sorts. However, it's risk vs. reward as the winning team will win an item from the team they defeated, so make sure you're willing to part with something should you come up on the losing end of the fight.