hi this is a naruto x bioshock crossover

What if on the mission to rapture naruto in the group was hired to find a group of girls that was taken. What if they find the girls in time inside of rapture in have to run for it in fande a escape pod. In what if naruto state behind so they could escape. What would happen to rapture win naruto became a big brother. Rated M for language lemons harem.