Crosis

"Ah... surely... I have lived all this time just to meet him—" Reika Himuro and her comrades are Class A magicians who wage daily battles against the "Threats," monstrous entities that endanger humankind. At the magic academy they attend, they spend their days looking down on and ridiculing Keisuke Tojo, an outcast boy branded as a bottom-tier Class F magician. Then one day, an overwhelmingly powerful Threat appears. Mobilized for the emergency, Reika is entirely outmatched and finds herself cornered in a life-or-death crisis. Just when all hope seems lost, a mysterious masked man emerges, subduing the "Threat" with sheer, terrifying strength—?!

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