You are just a normal teenager living your regular life. You live with your Aunt and uncle in their... mini dorm working for their delivery business. You have a pretty average school life filled with the usual teenage uhhh things... you know friends, crushes, awkwardness, all that kind of stuff.

Then one night you are giving your friend a ride home and you see a light. The light magically splits into two. Bored with your usual life you decided to see what this light is. Well it turns out to be two things. The first is a pretty hot, naked female. The second is a gigantic insect thing hell bent on... well I guess killing.. something. Then suddenly you transform into a killing machine yourself. After destroying the monster you now have a naked female to explain.

Isn't it fun how life changes? One day you are skipping towards your mediocre existence. The next the government plants scientists in your house. Robots appear, monsters try to kill you and your friends, plus there is this female who has no one but you. My how the world gets colorful out of no where in anime.