[No female lead] [Slytherin] [Decisive and ruthless] [Snake]
Good people often have short lifespans.
If we're going to do it, let's be a scourge that wreaks havoc on the region!
He traveled to the Harry Potter world and became the last bloodline of the Prince family, a blood relative of Snape!
Alan Prince vowed never to be a good person in his life, but incidentally saved Snape from his tragic fate.
Some people say he's just a child with a bad temper.
Some people say he is a dark demon king who wreaks havoc in the region.
But many more people see him as the salvation of an ordinary wizarding family and a great man who led the magical world forward.
But all Allen wanted to say was that he was just an ordinary wizard, at most with a bad temper.
P.S.: What kind of normal person could a child raised by Snape be?! (Snape: He's slandering me!!!!)
The synopsis is weak, so I'll move the main text. There's a decent Harry Potter fanfiction as a base, so feel free to use it.