Glowstick (Hangul: 야광스틱) (Mistranslated as Luminous Stick or Illuminated Stick), is a removed item from White Day: A Labyrinth Named School (Original). It can still be seen in the Prototype Version of the game. Several fan patches released by a Korean team bring the item back to the game.
The Glowstick produces hardly any amount of light, barely visible when you get close to a wall.
Just like Matches, this item offered light only for a limited amount of time.
In the demo version, it had no uses nor show any light. Probably because it is just a early demo.