Squad Jam will be held on Gun Gale Online's Japanese server. LLENN wants to participate, but her favorite artist has aconcert the same day. But when she can't get a ticket, she joins the tournament. She and her new partner, M head for the battlefield.

An hour and 15 minutes have passed since Squad Jam began and only two teams remain. LLENN and M are one of them, butwhen M has an unexpected breakdown, LLENN heads for the last battle alone.