Sword Art Online Alternative Gun Gale Online, Vol. 4 (light novel)

Old frenemies become staunch allies as the strongest team in the history of Gun Gale is born! This time, LPFM, named for Llenn, Pitohui, Fukaziroh, and M, will enter the third annual Squad Jam and overcome fierce competition and mysterious rules to uncover the mysteries of the UNKNOWN area that lies at the center of the map!