in other words, according to the keyframe, it looks like this: Tengro cuts Rimple, and at the same time, Kitz kills him from behind with a shuriken.
Maybe you should ask in ALL CAPS and in BOLD?
Like
THORY, LISTEN, IF THE FOCUS ATTACKER SCANS THE ND FOR "KILL" AND KILLS THE MAIN TARGET, DO THEIR ACTIONS HAPPEN SIMULTANEOUSLY, OR IS IT RANDOM, WITH SOMEONE KILLING EARLIER AND SOMEONE LATER?
