Why claim he's going to die?
Surely you'll make him feel poopy, and then let him go kill numerous other people, yes?
Just like you've done your entire life?
Allow bad people to do bad things, and then shrug and say "sho ga nai," just like every other person who allows evil to flourish.
That's what everybody does in the real world... or, at least, so I assume, looking at the state of my own country...
You've had the "power" to fight back, your whole life, and even used it a single time; learn to follow through with your actions, or give us an MC who will... sheesh...