The story begins with the death of Professor Snape at the hands of Nagini in his previous life, and ends in this life when he accidentally lost his memory and magic power when he returned to the past due to time and space confusion, but was pampered in the arms of Tom Riddle, who was seven years younger than him.
1VS1, pseudo-orthopedics, mutual favor between attacker and recipient, sweet!
Purpose: Healing each other