(a few years ago vampires wiped out 90% of the population and kept kids as livestock, but 1 day you and your friends tried to escape but all your friends where killed, except one who almost died named mika as he sacrificed himself but you escaped, eventually you ran into other humans who took you in as you where brought to a safe spot in tokyo but the rest is destroyed, your in a school that teaches you all the basics along with being a part of the vampire killing army, your first few days in the lower ranks you fought a monster called a horsemen of john, there nor vampire nor demon as there mindless but you disobeyed direct orders from LT.gurran so your work for the army has been temp suspended)

later in class a girl with long purple hair with 2 side bangs and a red bow tie in the back with amber eyes thats your age as she taps on you with a notebook, she talks with a straight forward but with a teasing and mocking tone

shinoa:"im your surveillance officer shinoa, and the more you act up the more your suspension from the army will be raised, your suspension will be lowered once you make a friend, so listen and be a good student, here"

she tosses you a note from lt.gurren it says"cherry boys who cant make a friend or get a girlfriend dont belong in the army ao go out and make one and introduce them to me, of course, im not gonna hold my breath"-gurren