My Craft Is Death [40K x Marvel Crossover]

Lt Y/N Titus of the 2nd company of Ultramarines, chosen to become an ultramarine at a young age by Captain Titus, Y/N was found with no family, and not even knowing his true name, Titus took him under his wing and granted him his name.

During a battle of the 500 worlds of ultramar campaign, Y/N falls through a portal and finds himself in a strange new world under attack by xenos, now he must work with the worlds defenders to purge the xenos and find a way back to his brothers.