"So.. I'm a commander for these girls now?" (Male XS1 Goliath/AST OC x NIKKE)

Long Story Short: He's a high ranking, genetically enchanced supersoldier wielding a modified version of the legendary AST/XS1 Goliath Suit from COD Advanced Warfare/Mobile, waking up from cryosleep only to find out the world he once knew in ash from a new threat.

(Slightly more detailed story)

Major Noah Maxwell, a soldier born for peace and protection ever since he first enlisted, was genetically enchanced by military scientists after an incident on his mission at South Korea against North Korean invaders, and was put into a division made for soldiers such as himself, led by a close family friend; General of the Army, Alexander Ironside.

Ever since then, the Super Soldier of a Major soon led a team composed of one of the best units across the globe, as well as Super Soldier's like him, into dangerous tasks that no normal human should ever do.

But in the same year, for an unknown reason, 2 military personnel called him in during his break off, telling him to pack his things and come with them.

Devastated at the sudden event, Noah said goodbye to his family and went with the militarymen.

Noah was soon told by Ironside that he should go into cryosleep, that; "they'll take care of the rest in the surface".

And soon.... The Major will undergo an adventure of deppression, happiness, anger, and fulfill his one purpose to keep; Protect, even if the cost is his life.

NIKKE: The Goddess of Victory belongs to Shift Up.

The images, songs, artwork, and characters belong to their respective owners, while the OC I will be using is mine (usage for my character somewhere else other than this story is allowed, just ask for permission :)).

Memes, skits, references and jokes may occur in the chapters to follow.

This marks the second legit story I am making, because this actually popped into my head.

[Update]
This is officially an "oc x harem" book thanks to a lovely fellow in both the comments and my following list, so uh... Ye :)