A BRAND-NEW BATTLEFIELD AWAITS!In response to David casually asking her out one day after SJ5's pulse-pounding conclusion, the mysterious Vivi issues a challenge: "Take part in my minigame and make it all the way to the end." When one competition ends, another one begins, and the prize this time is an IRL meetup! Not one to pass up an opportunity to meet his crush, David recruits Llenn, Fukaziroh, Pitohui, M, SHINC, and MMTM to the cause! With the most powerful players on his side, he should easily be able to secure the win...right? But what sort of crazy game has Vivi cooked up, exactly? How stiff will the competition be? And just who is Vivi, anyway?!