Hogwarts: After Being Buried Alive, Touching the Corpse Makes You Stronger

[Ravenclaw + Touching the Golden Colonel + No Nanny] Traveling through the world of Harry Potter, in 1993, Benjamin, a 13-year-old Muggle kid who was coerced into a Scottish grave robbing gang, was treated as an outcast by the team boss at the beginning and ordered to be buried alive in a cemetery. Fortunately, the tomb robbing system has been awakened. By touching the corpse, you can get the things the deceased had before his death, including magic, knowledge, and even life span and fate. If you touch the treasure, you can get system rewards and have the opportunity to trigger a hundredfold increase. "Congratulations to the host, you have obtained the wizard qualification." "Congratulations to the host, you have obtained the Animagus Human Transformation Technique." "Congratulations to the host, for gaining expert level potion knowledge." "Congratulations to the host, you have obtained your childhood sweetheart Severus Snape*1." When Benjamin heard the system beep, he realized that he was touching the parents of the savior! "No, I understand everything else. What does this childhood sweetheart mean?!" "So there are actually quite a few "human" graves in Hogwarts, right? Such as basilisks, unicorns, etc..." (Note: The protagonist of this article has a normal orientation)