Eirianwen is a lonely young woman stuck in a job she hates. She lives with her nerdy mother who only seems to care about some lame mobile fighting game. After an argument, Eiri must travel to a new city and immerse herself in the world of [AR] and Brawling! in order to win back her mother's prized sword. Along the way she meets some strange new friends, including the mysterious, yet goofy, Brawl! champion known as QuickStrike.