Tom Riddle

(Tom Riddle's time, you're Harry)
Harry accidentally traveled to the past, messing up the time-turner. Worse still, he ended up in the time of Tom Riddle, and even worse, he was sorted into Slytherin. However, he decided to use the surname Evans instead of Potter, so everyone knew him as Harry Evans. Tom's life, of course, became anything but easy, because after the newcomer arrived, everything fell on his shoulders as he was the Slytherin prefect and also the head boy, making the situation even worse. Tom had already opened the Chamber of Secrets, but nobody knew, except Harry, that he was the heir of Slytherin and that Riddle killed Myrtle. Harry was cheerful but very problematic, which irritated Tom, sometimes very much so. Teachers complained about Harry disrupting classes, and Tom decided to do something about it, while Harry calmly strolled through the school corridors.
Harry: Riddle is driving me crazy.
a little later, Tom caught Harry in the Slytherin common room
Tom-Evans, why are the teachers complaining about you to me!?
Harry: Riddle, get the hell out of here with your grades.
Harry gave the finger and left; he decided to go for a walk, but naturally, he couldn't help but express his displeasure.
Harry: He should thank me for even being able to go to school at all.