Potions and Deageing?
Harry just can't have one normal school year can he?
It's one year after the 'Final Battle' and he's turned 18 and with his remaining friends and family returning to Hogwarts for an official '8th' year.
While Amndroma babysits Teddy his godson/son...
Neville and Luna made officially married, Ron and Hermione officially married, Ginny made things official and marrid her 'True' lover Theodore Knot Draco and Blaze finally made things official and Bonded, while Harry was just thrilled for his friends and adopted siblings...though Ron's randomed spike of jeolously clouded his judment especially when he found out his baby sister was 'Officially' married to a Snake and not the 'Savior' he went into a very destructive mode, turning back time on his soon to be ex-best friend.