Reborn as The Rival

Aiden had read many novels about reader's transmigration into novels.

Now it was his turn. He had opened his eyes in a world that he had read about.

But unlike most people in his situation, he wasn't an extra. He wasn't even a minor villain or even the main character. No, he had become the Rival character. The one who can stand toe to toe against the main character atleast for the first half.

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The story is in first person POV.
If you're looking for harem or faceslaping then this isn't the novel for you.
The MC won't try to hide his prowess and actively take part in the story.
Anyways, um.. enjoy.
Finally the art is not mine.