U wa Uchuu Yabai no U!

Synopsis

High schooler Kukuri Kudou runs into a meteor on her way home from school. It annihilates all of humanity. When she comes to however, it’s three days prior to the collision and the confused Kukuri gets a crash course about the crash from her cousin Nuruka Hisuuchi: Instead of a normal high school girl, she’s supposed to be an agent of the interstellar secret service. The bombastic start of a crazy space spectacle! (Source: Webcomic Gamma, translated)