Natural Selection (слэш)

Professor Charles Xavier is thirty-two years old when he meets his Sentinel, and as a credit to his half of the subspecies, he still manages to finish the seminar, run through a credible Q&A session, thank the Dean for the invitation to lecture as a guest at the Yale School of Medicine, before finally fleeing the theatre to find the nearest bathroom.
While he's busy throwing up into a toilet, he dimly hears the door to the bathrooms opening, then getting locked, and then someone is awkwardly patting him on the back, and Charles knows rather than sees that the Sentinel is conscientiously offering him tissues to wipe his mouth.
Maybe not a bastard, then.