The Aging Potion - Snarry

The obligatory potions class accident causes Harry Potter to age a decade during his seventh year redo. But not only is he older, he seems to remember his future life, including the surprising relationship between him and a certain bat of the dungeons.

A post war Snarry story. If you don't like the Harry Potter x Severus Snape pairing, you don't need to read. Or, at least, don't leave nasty comments about you not liking it. Thank you.

None of the pictures I use are mine and I don't own Harry Potter