High School DxD - Volume 21 Chapter 3-1

Reborn as a sword, he lived for hundreds of years, and then he occupied the body of a 15-year-old prince.

“Obtaining the topmost degree of talent in sword arts in the world requires giving up 72 years of lifespan, which leaves you with only five more years of your life. At the same time, you will never be able to feel love, kinship, and friendship, and you’ll end up leading a lonely life until your death, unable to procreate, or to have any descendants.

“From now onwards, everything related to happiness in the human world shall no longer be of your concern. Are you willing to accept this?”

“Hahahaha, I’m already alone bereft of all support, my hopes dashed to pieces, shouldering only absolutely irreconcilable grudge and hatred, why would I disagree? Why would I not want it? I couldn’t ask for anything better!!”

His sword sweeps across the Divine Continent for seven days and nights, moving 90,000 miles through the starry skies, unhindered.

He slays saints and buddhas in Heaven, slaughters demons and devils in Hell, sweeping away all the grievances in his heart!

- Description from Novelupdates

A teenager who unexpectedly gets transported to the modern world from ‘the world of the immortals’ . He finds himself in the body of an ordinary guy. He wants to go back to his world and for that, he will have to practice to get stronger and investigate the reason why and how he crossed through to this world.

The Cambrian Explosion, now the largest life science puzzle…

500 million years ago,among single-celled life on Earth , there suddenly began mutations similar to evolution, a variety of gorgeous creatures were born “out of thin air”, all ancestors of today’s species appeared in that short period of time, each species were evolving at lightning speed; billion times faster than today, it was a brilliant era.

Unfortunately, the life of brilliant things are always short, after the brief “Cambrian”, life on Earth entered another 56 million years of evolutionary era at turtle speed. And humans, were also one step faster during the turtle race, and become the leader of life on Earth.

But now — a greater “second age” has come again.

During the lightning speed of evolution, humanity was kicked off of the throne on the food chain in the shortest time possible, and life on Earth, welcomed the second brilliant big bang.

The real end of the world, is no longer brainless zombies or desolate earth, but — the end of mankind, the whole earth’s paradise.

- Description from Novelupdates