Kadokawa's digital manga platform Comic Walker has begun running an adapation of Sword Art Online spin-off light novel series SAO Alternative - Gun Gale Online, the fourth volume which, entitled "3rd Squad Jam Betrayer's Choice (I)" is scheduled for March 10th. Tadadi Tamori adapts the spin-off from series creator Reki Kawahara and Kino's Journey author/gun enthuiast Keiichi Sigsawa.

The series follows Gun Gale Online "Squad Jam" team competition players Karen "REN" Kohiruimaki, a tall girl who players with a short, pink clad, P90 armed avatar, and Pitohui, a woman in black with a tattooed face with considerable ability and a collection of rare weapons.

The first chapter is online (in Japanese) here.

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Scott Green is editor and reporter for anime and manga at geek entertainment site Ain't It Cool News. Follow him on Twitter at @aicnanime.