Pluto's Kiss (冥王の口づけ) is a catastrophic event that took place on December 24, 2005. On that day, all computers connected to the Internet crashed simultaneously around the globe. Additionally, all networked computer and communication network control systems were shut down, resulting in numerous traffic accidents and disasters. It was later discovered that the virus creator was a ten-year-old elementary school student, living in Los Angeles, California. Ever since then, ALTIMIT OS has been the only major operating system in the world; this is credited to its remarkable stability.