Real Empress from a Noble Family - Chapter 305 - Look After Your Sister-in-law for Me!

Arakawa Kouki is reincarnated to a Japan with a different history than the Japan he knows with the memories of his previous life still intact. Kouki was discouraged, “Aren’t reincarnation stories supposed to be at some fantasy world filled with swords, magic and elves?!”

What was originally an ordinary day, suddenly became a historical turning point. Enormous, mysterious Cubes appeared all over the world without warning and as if Judgement Day’s spears, inserted themselves into the blue planet.

From inside the enormous Cubes, endless streams of monsters gushed out alike raging tides, utterly defeating the unguarded armies of each state in the blink of an eye.

In order for humanity to preserve its final embers, the heads of states issued orders of retreat, to no longer attack the Cubes but rather to cling to remote cities, which they turned into self-sufficient survivor bases and around which they built 100-meter-tall Walls of Life!

Many years later, while bearing the heavy weight of history, the first expeditionary force brought back a world changing piece of information. The Cubes possessed exceedingly high intelligence and they regularly transmitted mission instructions to humans nearby. The mission rewards were incredible.

Since then, humans rushed out of the confines of the walls and once more set foot on the wasteland!

- Description from Novelupdates

Brolin, the nine emperor of the Black Dragon Mountain Empire, accidentally obtained the system of the realm of the world, and began the legendary journey of the battles!

In the Naruto world, with his star power, he overwhelmed the shadow-level powerhouses, grabbing reincarnation, and becoming a ten-tailed person!

Fighting the mainland, he led a large group of lords, surrounded the ancient eight clan, and confronted the peak Dou Sheng!

Covering the sky, he broke into the restricted area, seized the emperor’s scriptures and immortal medicine, and called the Lord of the human universe to fight supreme, and the sky was falling apart!

In the eternal life world, he crosses all realms, and fights against the Supreme King of Stone with the attitude of eternal true God!

Immortal continent, he jewels Jiuyang, looks down on immortal ancient, strong sky!

The perfect world, he runs across the sea, suppresses the heavens, and the Zhunxian Emperor must retreat!

Thinking of the eternal world, he ascended to the realm of Supreme Hunyuan, the fifth step of the war, Bai Xiaochun!

Heaven and earth, this is an epic of the black dragon!

- Description from uukanshu

Heavy R 18 Yuri, harem and futa and non-humans.

Aurora had been human once before. But she had been betrayed by her only love and left to die at the bottom of the abyss. But she survived. As a result - she was granted the power and authority of a god. Being the only one to see the bottom of the ‘Great rift,’ she became a supreme being - A goddess.

Using this power to turn back time, Aurora vowed to free her love from the clutches of those who had been like poison to her. She would take revenge on the Abyss Tower.

Being the elite academy it was, Abyss Tower had no equal when it came to training people. Aurora could no longer allow that to continue. So she vowed to change things. She vowed to set up another academy and challenge The Abyss Tower for the Abyss's ownership.

But with the other gods and goddesses tossed in the mix, as well as the Abyss itself acting up, things were not going to be that easy. Especially since her lover's soul no longer existed as one in the past.

The more Aurora tried to straighten things out, the more it all tangled up. Did she really mess up by reversing the time? Or was an even bigger plot being brewed in the background?

And the truth of everything lies in the flow and exchange of energies between different bodies. In easier terms - to dual cultivate.