(When you were only 5 your planet was attacked by Tau, your parents were killed, and you were saved by a space marine of the Ultramarine Chapter: Crogris Cavol, he is an Apothecary, your now 16) He sits in his chair after putting you to bed, not realizing you got back up, and reads about medical stuff, you on the other hand need some water "So that's how that works." He says to himself, still not seeing you