The Legend of William Oh - Chapter 58: Cheaper by The Dozen

Dr Dalton Wyatt, a world renowned Scientist and Inventor is transmigrated to the body of a high school student Dalton Wyatt who committed suicide due to unfortunate circumstances and complicated life.

He died on the wedding of the girl he had a crush on, after a long and successful career. After convincing Yama to send him back to the world, he decides to fix the areas in which his life went wrong. Realizing the lack of love and romance in his past life, he sets out to conquer the hearts of various women.

- Description from Novelupdates

An alien race invaded the Earth on June 6, 2128. At the midst of this war, many nations allied with the alien threat and the war nearly wiped out the rebelling humans of the planet. At the edge of mankind's survival, the United Nations Army launched its forces to eliminate the immediate stellar threats that loomed over Earth.

General Seeker Carlean, commander and leader of the mission, risked and gave his life to destroy the immediate stellar threat. The battle was won though Earth lay in ruins. Perhaps mankind will live to see a few years of peace before the alien threat returns to wipe out their existence.

At the immediate aftermath of the stellar battle, the fallen Seeker Carlean awakens and finds himself at aged 17, living the peaceful life he lived 16 years before he died.

So begins a new game in the battle for humanity's survival.

When a normal human suddenly dies and enters another world with the almighty cheat, their very own system, what do you think would happen?

They will rise above every other being and soar the skies, for they will become an unstoppable force that brushes through the entire world, causing waves... Or so it normally goes, right?

After Victor dies, he did get transmigrated, but it wasn't as a rich young master or some character with unfathomable potential. NO. He woke up as a random dungeon mob in another world...

Read to follow Victor's journey through his new life as a mob.