The blowtorch is handheld and, according to the label on it, uses propane as fuel. It appear with a black and blue color scheme, the tip is light brown. The blowtorch can be brought everywhere around the school and is not seen as suspicious.
Three blowtorches can be found inside the Science Club. Yandere-chan can use them to perform cauterization on a corpse, so that it does not leave a blood trail when dragged.
On the table in the back of the Science Club room, the blowtorches can also be used to heat the ritual knife in order to perform the Flame Demon's demonic ritual.
- The ritual knife can be heated even if all three blowtorches have been removed from the table.
- The blowtorches will sometimes remain attached to the ritual knife even after the heating animation has ended.
- Nemesis cannot be cauterized.
- The blowtorch was implemented in the January 16th, 2017 Build.