No criticism, it was very good. :)

Hey! I like this! I've only read volume 1 of Zombie Powder, but I loves the brotherly fluff! X3 Pleaaaaase continue? Please? I really want more!

Sounds good! I jope the next chapter is as good! C:

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there are still people alive in this fandom eeeep c':
ALL HOPE IS NOT LOST

Anyway, back to making some semblance of sense. You captured the personalities beautifully ;u;

You may have unintentionally gained my forever love.

The pacing is great in this-there's just enough tension to keep me wanting to know more. It's a little disappointing this is only a one-shot, but maybe I need to revisit the series again for it to make sense. The characters act like themselves, and the story feels a part of Kubo's world, which is always a plus.

There are some fragments, but it feels natural. Only one obvious usage error: "knife-thrower" in place of "knife-throwed."

Nice work!