My headcanon is that it was a candle, and it was Hanako that accidentally knocked it over (that much is based on H29 - Future, which isn't canon, and contradicts canon in a couple places, but forms much of my headcanon)... and she eventually realized it.Liminaut wrote:Depending on how you think The Fire started, Hanako could have some real problems with candles.
"Wow, the storm has cut the power. Don't worry, Hanako, we can just light some candles....Hanako?"
Talk about epic levels of survivor's guilt - she knows it's her fault that her parents are dead, and she knows it's her fault she's scarred, and that her parents' death was the only reason she even survived it.
I suspect she's tried to repress that memory so that she can even function, but candles are probably a massive trigger for all of that. It could be yet another reason why she hates birthdays, too, one that she didn't state.