A Grave Mushroom (ハカバテングタケ Hakabatengutake) is a magical mushroom that can only grow in the graveyards. These mushrooms are necessary for spiritual techniques to call the souls of the dead, although its effects should wear off by sundown.
Description
The Grave Mushrooms are small red mushrooms with a skull face on its surface.
History
TV series
Blytonbury's Undead Travelogue
Sucy plucks a Grave Mushroom from a graveyard, which is accidentally combined with Akko's object restoration spell to bring Mr. Holbrooke back to life for a day.