In Need

A few years after the war, Harry is DADA teacher at Hogwarts. He's going to the Infirmary of Hogwarts, but in there he finds out something shocking about Severus Snape; something that'll change his evening plans. A Little Severus is unexpected, as it is his instinctual reaction to look after him. How will they navigate this new territory? WARNING:Age regression,non-sexual age play