File:Sword Art Online Alternative - Gun Gale Online 4 cover.png

Summary
A coloured illustration on the front cover of Sword Art Online Alternative: Gun Gale Online 4 - 3rd Squad Jam Betrayer's Choice (I)

Latest image source: Ruranobe

Original image source: Gsimenas - http://blog.daum.net/_blog/BlogTypeView.do?blogid=0qu4l&articleno=8451