How to Interrupt the Dark Lord's Casting Bar [Harry Potter]

As usual, I'm writing this for love, so please leave lots of comments.

Tom first met Heller by the battered doorframe of Wool's Orphanage.

Heller's contempt for him was unmistakable, leaving Tom's pride and ambition feeling shaken and fragile.

"You're Tom Riddle?" Heller deigned to spare him a glance.

Tom suppressed the murderous intent already welling up inside him and replied in a mild, polite manner. "Yes, sir. Is there something you need?"

Heller stared at him for a long moment, then sneered, tossed aside the handkerchief he'd been using to cover his nose and mouth, and ruffled Tom's hair. That was how Tom's journey into the magical world began.

Though his attitude was genuinely irritating.

*Tom Riddle × Heller Wittelbach, villain × villain, Tom is the top

*About an eight-year age gap. They hate each other from the start. Heller is a real bastard.

*Snake-faced Tom makes an appearance and will be put in his place by Heller. Unless something unexpected happens, this will have a happy ending.

*Includes GGAD. This pair will probably have a bad ending.

Theme: Even villains get what they deserve