Squad Jam is a battle royale that pits teams against each other. LLENN, a female player clad in pink, has teamed up with M, a burly man and talented sniper. At the beginning of the tournament, LLENN scouts ahead, but then an enemy team closes in…

Karen Kohiruimaki’s college life in Tokyo hasn’t been as she had hoped, due to her insecurity about her height. She comes across Gun Gale Online and, as LLENN, she becomes known as a “player killer.” But then, another female player aims a gun at her…

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

LLENN receives some unexpected help during her battle in the dome that results in a change of tactics as she continues towards team PM4. M is surprised to see team SHINC approaching, and Pitohui learns that her ruthlessness can have consequences.

At last, it’s the finale of the Second Squad Jam. LLENN and Pitohui’s one-on-one combat has begun. How will their fight end? Who will win the Second Squad Jam? And will LLENN be able to save Pitohui’s life?

Three months after LLENN won second place in the team battle, “Second Squad Jam” (SJ2), “Third Squad Jam” (SJ3), was announced. Soon after, news broke out that Pitohui, M, Fukaziroh, and LLENN formed “LPFM,” considered the strongest team in the game. Clarence is obsessed with LLENN, and Shirley ignites her fighting spirit to kill Pitohui. All members of SHINC hope to take revenge as they lost to LLENN in SJ1. A heated battle surpassing SJ2 is about to begin…!

It turns out the true "betrayer" from LPFM was LLENN. Pitohui lied, saying she was the betrayer to fight LLENN with all her power. LLENN becomes outraged as she learns the truth and declares she wants to defeat Pitohui.

LLENN becomes the NPCs' prisoner, so she frees herself by committing suicide. She looks at her watch while prepping her equipment in the waiting area. It shows the clock at 21:54. Respawning takes three minutes, so she'll be back on the field at 21:57. By then, there will only be three minutes until the time is up. Her allies are doing the best they can, but the enemy is tough. Their defeat is inevitable. Pitohui takes out the bazooka she kept as her trump card, but it's not enough to ensure victory. It's up to LLENN whether they win or lose…!