"Omae ga Kawari ni Shine" to Iwareta Watashi. Imouto no Migawari ni Reikoku na Henkyou Haku no Moto e Totsugi, Shiawase wo Teniireru - Ch. 3

[MangaDex]

 

[Aliamus]

Every time her family gets mentioned,
I hope they get their comeuppance, ideally with her knowing only after the fact.

 

[Kyuketsuki]

Fire caused by matches? I know smothering denying oxygen is for grease fires as using water on oil fires make it worse. I know that matches stack was sizable but the fuel would be consumed rather quickly and the fire on the likely wood walls in which water would be effective.

 

[Claresilver47]

Would make more sense if this was an oil or grease fire where water just causes it to spread...

 

[kaezeribato]

Fire caused by matches? I know smothering denying oxygen is for grease fires as using water on oil fires make it worse. I know that matches stack was sizable but the fuel would be consumed rather quickly and the fire on the likely wood walls in which water would be effective.

Matches easily caugh fire, so if the dude messed up and made the entire stack burn, then the fire can easily propagate.

Using water to extinguish a fire is not as easy as people seem to think. In this they used bucket, so they had to throw the water on the fire, but if the fire is too strong such little amount of water will barely do anything and will easily evaporate.
On the other hand sand need a temperature of 1650 degres celsus to be affected so it's far more efficient if can have it in suffisient quantity.

Before fire truck and the use of similar tech to easily manipulate large volume of water extinguishing fire was extremly hard.

 

[Saikeno]

It's just me or the character have a somewhat striking resemblance to Code Geass.

 

[Salfaro]

Matches easily caugh fire, so if the dude messed up and made the entire stack burn, then the fire can easily propagate.

Using water to extinguish a fire is not as easy as people seem to think. In this they used bucket, so they had to throw the water on the fire, but if the fire is too strong such little amount of water will barely do anything and will easily evaporate.
On the other hand sand need a temperature of 1650 degres celsus to be affected so it's far more efficient if can have it in suffisient quantity.

Before fire truck and the use of similar tech to easily manipulate large volume of water extinguishing fire was extremly hard.

Yeah, but the issue here is that they don't say it's just because it's a large fire that it doesn't go out from the water, they say it's because it's a match fire. Like, to the point where matches are a prohibited item because they cause these apparently more-dangerous-than-usual fires. Which is just a bizarre thing to say, like it's magical fire or something.

I suspect that the mangaka heard a bit of info like "you can't put out phosphorous fires with water", and realizing that phosphorous was in match heads, thought "oh, so you can't extinguish match fires with water!". Not realizing that even if that were strictly true, it would only apply to the match itself, and not the rest of the room that's burning.