Well, from the weird tech and the person being called alita, I come to a hypothesis that this is Battle Angel Alita, then again i am wrong.
There is a clue in this image: >>10098888 !
This person has picked up on it!
Alita turned into a man?
Isnt this from that manga that takes place after the story from the first manga?
That is Sechs. He chose a male cyborg body.
Yup, Battle Angel Alita Last Order. I like this one a lot more than the original.