humanity last hope (nier automata X Ben 10 x OCs)

Jason todd who was part the graduation class of Jefferson high School 2024 find himself and his classmates in a horrible future were human kind has been whipped off the face of the earth. now Jason todd and his classmates are in a weird position. (disclaimer their will be spoilers of the story of nier automata while another parts may be my own lore, I highly recommend that you check nier automata out. this story is not meant to be a replacement for the original story it's just me wanting to write an nier automata story cause I'm a fan. all the characters from the nier series is owned by Yoko taro)