To Be Human?

Being the last member of his species for the past few centuries on a planet full of dangerous creatures, Y/N really thought he's alone in the galaxy. This is the thought that haunted him for centuries as he continued to train and get stronger. Then a fleet of ships arrives at his planet and out came a lot of armored...girls? What shall they do with an extremely powerful being that has the potential to destroy continents? They take him in as one of their own, of course!

(I suck at making summaries)