I became Voldemort Novel

Cyrus traveled to the world of Harry Potter and thought that splendid magic was waiting for him.
Unexpectedly, he replaced Voldemort's soul in the diary and became "Tom Riddle".
Cyrus: Damn it, I've become Voldemort!
Days passed.
During the days when he stayed in the diary, Cyrus continued to learn and digest Riddle’s knowledge, waiting for the opportunity of resurrection.
It wasn’t until the summer of 1992 that Ginny Weasley wrote down words in her diary for the first time…
"Dear Diary....."
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Original MTL name: HOGWARTS: OOPS, I'M VOLDEMORT