I, the Villain, Want to Save Myself, But the Yandere Heroines Disagree - Chapter 104 - Pleasant Cooperation

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

- Description from Novelupdates

A cataclysmic threat looms over all realms in existence, unnoticed by any.The Enigma Race, the harbingers of ruin, corrupts everything in their path, harvesting countless souls for their enigmatic Lord, posing a dire threat to all living beings. No realm is safe.While confronting invading forces from a foreign multiverse, Elias is cast out of his space-time continuum and into the chaotic depths of the Temporal Vortex, a location that has spelled the doom of many, due to a catastrophic accident.To survive, the once supreme Quantum Seeker, now weakened by a cunning invader, musters all his remaining might and, against all odds, transcends the Vortex, losing his body in the process. His consciousness drifted into the miraculous Mystic Multiverse, located in a different space-time continuum. Now, determined to return and save the ones he left behind, Elias vows to reclaim his lost strength.But as time passed, Elias discovered that the new realm isn’t as simple as he initially thought…

A Count’s Daughter who lost in the running to become the Second Prince’s fianceé, Camilla. The Prince chose a Baron’s daughter as his fianceé, and the world blessed the two’s love as fated. On the other hand, Camilla who was tailored and elevated as the love’s villain in the end, as punishment she was made to marry a terribly fat and ugly man――called『Toad of the Swamp』from his appearance, a lord of a remote region named Alois.

Hikaru Nozomi, an ordinary university student, gets recruited by the Order of the Elements after awakening the Element of Light. And his mission? To find the other 9 Elements.