Where Harry Potter goes back in time several times and meets a version of Tom Riddle he didn't really expect. A Harry Potter and Katekyo Hitman Reborn crossover story. Time-travel. AU. (OR that version of MOD-Harry-Potter-time-travels-into-Tom-Riddle's-time trope where Harry meets a Tom that wasn't exactly Tom because he had a lazy carnivore inside his head that worked as his "conscience" and helped him on his way to world domination.)