Kou, a high-school student, has departed from his grandparents in Tokyo to revisit Yamami, his childhood home. Due to a past ordeal, Kou is afraid of fire, but his life takes a new turn after meeting a young "Sorcerer's Apprentice".
A tale of growth and self-discovery following a group of boys aspiring to be pyrotechnicians, crafted by "No.6" author, Kino Hinoki!