Demon Slayer: Kimetsu no Yaiba

[Buffalobiian]

3

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Hmm, did Upper 4 survive somehow? Or did Muzan appoint a new one?

I assumed a new one.

Also, all the new training have nothing to do with breathing techniques. They covered flexibility, swordsmanship, strength etc, but none of it is about enhancing your breathing. The skill tree so far has entirely been about breathing techniques. The grunts, despite having survived the selection, all display zero breathing combat techniques.