The Siege of X-41: A Marvel School of X Novel - EN

Once, Joshua Foley hated mutants, then he became one. It’s… problematic.
When his healing powers manifested, the violent anti-mutant Reavers
rejected him and only the X-Men offered sanctuary. Now he’s surrounded
by mutants who still see him as their enemy. A deep-sea training mission
isolates him with a select team of new X-Men drawn from both the Charles
Xavier Institute, and the Jean Grey School, which is bad enough, but then
the attacks begin. A sect of sea monster-worshiping vampire mermen
besiege the base, leaving them stranded and trapped. As the attacks
escalate, their chances of survival plummet. Things go from awful to even
worse when one of their team begins sabotaging their attempts to call for
help, all in the name of a sleeping behemoth soon to awake…