who poisoned the well in demon slayer
The well poisoning in Demon Slayer is attributed to a rival dojo sabotaging Keizo’s household; the well was poisoned, which killed his daughter Koyuki and led to Hakuji’s tragic rage.
What happened
- The poisoned well appears in Akaza’s backstory, tied to the dojo rivalry.
- The poison killed Koyuki, which pushed Hakuji into killing many people before becoming a demon.
Who did it
- Public summaries point to people from a neighboring/rival dojo as the ones who poisoned the well, rather than naming a single canon individual.
Why it matters
This incident is one of the key tragedies behind Akaza’s origin, and it is often discussed in fan posts and recap articles because it explains how his human life collapsed.
| Item | Answer |
|---|---|
| Victim | Koyuki |
| Perpetrators | Rivals from a neighboring dojo |
| Story arc | Akaza’s backstory |