So last time I mentioned that the Trigun series really revolves around a war of values and ideas. Knives' logic of survival and killing for self-preservation vs. Vash's morals of saving and caring for everyone.
Get this: Everything Knives does to Vash in the series is used to not only cause Vash suffering, but ultimately for Knives to prove his point: that you can't save everyone. If he can break down Vash's values, he can beat Vash. So we see all the situations Knives forces on Vash, putting him in circumstances that hit at Vash's morals hardest. Here are some:
- Knives creates situations where Vash must risk injury and his own life to save people, like in the third-to-last episode, "Sin," when Midvalley is attacking humans, and Vash goes out of his way to block them, receiving personal injury.
- Knives shows that even those Vash saves end up dead. He does this by killing those Vash cares for, and by even killing the Gung-ho Guns Vash spares, like Dominique and Monev.
- Knives mocks Vash's inability to save people by having characters like Caine and Midvalley commit suicide right before Vash's eyes. I mean, there is literally nothing Vash could have said to stop Caine or Midvalley. And because saving others is so important to Vash, he takes the death on as if it was his fault and mistake. He feels like a failure because he couldn't save Caine. And Knives wants Vash to believe that if Vash had died, these other people wouldn't have. (You can't save everyone.)
- Knives plans to show how even Vash's friends will kill those closest to them. He does this by assigning Wolfwood to kill Vash. I really don't think Knives expected Wolfwood to succeed in beating Vash, but it would have added to Vash's torment to have Wolfwood try.
- And finally, the closing act is to prove to Vash that even he has to kill to save others, and Knives does this through Legato. For Knives, it was imperative that Vash shoot Legato dead himself. It wouldn't have had the same effect if Legato had made him do it. Knives scores a goal in this because Vash does shoot Legato and he does it to save Meryl and Milly, driving home that "you can't save the butterflies without killing the spider" mindset.






