Karen Kohiruimaki always felt out of place in the real world. Due to her extreme height, she found it hard to make friends with other girls her age. Everything changes when she's introduced to VR and Gun Gale Online. In GGO, Karen is free to play the cute, chibi avatar of her dreams! Can Karen find friendship in this bullet-ridden MMO...?

Karen is living her best life, getting to play as her cute chibi avatar Llenn in the VR game Gun Gale Online. She becomes fast friends with mysterious woman Pitohui, who invites her to an in-game event called the Squad Jam. But Karen won't be teamed up with her new friend-instead she gets paired with the stern and silent M. Not 10 minutes into the event, they get surrounded by a hail of gunfire! Will they be able to hold their own as a two-man team against squads with actual military training...? Hey, wasn't this supposed to be just a game?!

With only two teams remaining in Squad Jam, Karen (a.k.a. Llenn) and M prepare to move in for their final kill...that is, until a sudden barrage of bullets stop them dead in their tracks! Will the two be able to pinpoint the enemy in time for a counterattack?!

The Squad Jam is heating up, and Llenn’s in big trouble! She’s pinned down, outgunned, and outnumbered, but only one team stands in her way. With nothing left to lose, she takes the fight to them and charges in, shifting to close-quarters combat! Will LM be able to overcome the odds and win it all?