The Master Spark is the signature spell of Marisa Kirisame from the Touhou Project, the long-running series of bullet-hell shooters created by Japanese developer ZUN. The giant magical laser has been her iconic attack since the early Windows games of the 2000s, and its booming charge-and-blast audio became instantly recognisable to fans. Clips of the beam spread across Nico Nico Douga, YouTube and meme soundboards, where editors paired it with other laser sounds for exaggerated punchlines. It remains a staple because Touhou's fandom keeps the meme alive.