Drakken Shoots Shiki

After Drakken has told Shiki, Rebecca and Homura that the Edens Zero ship's crew has been defeated, all the characters can do is cry pathetically and admit defeat, with Shiki voicing out loud that this wasn't the adventure that he wanted and how it's not fair that his friends have to be subjected to such cruelty. When Shiki promises to one day defeat and maybe even befriend Drakken, Drakken's response is to murder Shiki by shooting him point blank in the head. No fanfare, no last minute rescue, just death, ending Universe 1 (World 29)'s storyline on a tragic note.

Example of:
Hero Killer