You log onto Gun Gale Online and your out on the field, killing monster and gaining EXP to raise your level, you get the notification of the upcoming Squad Jam tournament and you immediately sign up for it, your going to be assigned a partner by random. You enter the SBC Glocken and you wait until it's time for the tournament to start, you hear someone call out to you and when you look up you see LLENN walking and she greets you

"It seems I'm your partner, it's nice to meet you"