I Reincarnated During the Apocalypse and Killed My Enemies - Chapter 189 - : Mental Strength Upgrade

An Individual from Earth finds themselves in the Shinobi World, equipped with a Scientific System. From that moment, he delved into scientific research far ahead of its time.

There was once an immortal cultivator fighting for the fate of human beings. Unfortunately, he failed that time; but fortunately got another chance as he was reborn once more as a human, on the earth of 5,000 years ago. With a second chance, he not only would embark on the road of saving all mankind, but also would retrieve his human nature on the new journey that would last for 5,000 years.

- Description from Novelupdates

In a certain empire, a young prince was born with a golden pickaxe. It should have been seen as a miracle or a blessing, but instead, the emperor wanted nothing to do with the child. He refused to accept a prince blessed with what he considered a commoner’s job, fearing it would taint his royal bloodline.Abandoned by his own parents, the young boy, Shennong, was taken in by a succubus.But neither the succubus nor the emperor knew the truth about him—Shennong was no ordinary child. He was a reincarnator.This is the story of how the world of Matay reacts to the birth of the first Sandboxer, a class unknown to many. Will Shennong forgive those who abandoned him? What was the purpose of his reincarnation in this world? What is the true nature of the golden pickaxe, and what does it mean for Shennong?One thing is certain—Shennong is not alone in this world because he had a true sandbox system and people to support him even in this world.Join him and experience a true sandbox adventure!

I got transmigrated into a game I’ve never seen before.

I thought it was a top-notch RPG and spent 30 years on it.

I retired as a war hero and planned to spend my remaining time leisurely.

But it turns out, it was an academy story?