Aki Murasame

Aki Murasame is a top-tier member of the organization ARMS, who transferred to the same school as protagonist Hikaru Amatsuka under the mission of safeguarding the rare mechanical arm known as Alma. She wields a pair of arm-type weapons called Dexter and Sinister simultaneously in battle. Having lost her family to a mysterious worm-type mechanical arm user, she is driven by an unwavering desire for vengeance. Despite projecting a stern and socially withdrawn demeanor, she harbors a deep sense of justice within. The enormous energy she expends in combat also means she is almost constantly eating to replenish herself.