Sublight Drive (Star Wars) - Chapter 4

Arthur Reynolds lived as a quiet, compassionate soul who loved to read and workout in his spare time, sacrificed himself to save his family, trading his own life for theirs.In death, his journey was far from over. Reborn into the mystical world of Sylvara as Raegar Blackwood, he discovers a land teeming with Aether, prestigious magic academies, perilous dungeons, and fearsome monsters.Join Raegar as he learns how to harnass his Fusion Magic to become a legend in the making. Witness him conquer dungeons, win tournements and become the strongest.

The world is about to be destroyed to make way for an interstellar transmission array formation. A young man journeys through the stars to save his home. A bloody fantasy adventure.

- Description from novelupdates

After getting shot, Lucas, a serial killer, reincarnated into the novel world as a tragic villain with the same name, Lucas Ciffer.

Lucas Ciffer was supposed to be the Holy Kingdom's successor to the throne, but his demonic appearance and the powers he possessed terrified the entire kingdom. A white-haired boy with red eyes and pale skin, together with his dark powers, got persecuted and exiled by his own family. Not to mention that in the future he was destined to die by the hand of the hero.

Lucas fell from holiness, and, with the serial killer's bloodlust and knowledge of the future, he decided to prove the world right.

Yes. I could be a villain; no, in fact, I WILL BE THE VILLAIN.

Anyone who could construct a stable Spell Model could become a Wizard — that was the Wizards’ ultimate secret! Having been given a new life as the son of an aristocrat and armed with a super quantum computer from his past life, Spell Models came as easily as breathing to Merlin. With this overwhelmingly huge advantage, would Merlin become the greatest Grand Wizard of all time?

- Description from Novelupdates