Only I Know About the Villainess' Dere

The protagonist was reincarnated into an otome game as the first prince. He had played the otome game in his past life, and knew that the villainess was actually not evil and had lived an unlucky life. He searched for the route where the villainess was saved through all media, but he couldn’t find it and gave up. But this time, he was determined to save her.

Original Web Novel: Kakuyomu, Syosetu