Bog Standard Isekai - Chapter 25Book 1.

During the day, she was his secretary, working very hard with excellent abilities. At night, she was his bedmate, trying her best to please him, and the two of them were very harmonious in bed. One day, this relationship was on the verge of ending. However, both of them had already become deeply involved and had grown accustomed to each other's presence, falling in love with each other. So...

A generation's mighty and most powerful expert died mysteriously and reincarnated without any memories on a small planet far away from the Cultivation World.

This small planet was earth.

Five thousand years ago, a great calamity descended on earth. Countless Spatial Cracks appeared in the sky and beasts invaded. After hundreds of years of fighting, humans discovered they could awaken a battle spirit that can help them raise their strength and grant them the abilities that were simply unimaginable for humans before.

Qin Feng also awakens his battle spirit but unfortunately, it was swallowed by his own birthmark, The Infinity Symbol.

This was just the beginning of the mysteries that surrounded him like invisible specks of dust. He soon discovered that the 'Infinity Symbol' was actually not his birthmark but something mysterious from another world.

The Infinity Symbol helped him awaken a Divine Battle Spirit and granted him a Nameless Cultivation Technique that was beyond the world's limit.

He also discovered that he could not die! Every time, he was killed, he returned back in time with the memories of what is going to happen in the future.

Soon after awakening the Divine Battle Spirit, a mysterious beautiful lady stepped into his life and told him that he does not belong to the earth. He was actually the reincarnation of someone called 'KING'.

The mysteries that surrounded him like the invisible specks of dust started to come on the surface from the day of his awakening, revealing many secrets to him.

Senju clan ancestral hall, everyone: “I hope that the ancestors will bless me and make my Senju clan great again…”

But the protagonist stared at a photo in the ancestral hall: “Uzumaki Mito looks really good.”

~The personality of the crumbs in the crumbs was detected, “Grass Dungeon” was awakened, the mission goal… to make the Senju great again! Now start assigning you a great mission guide… Already assigned, Uzumaki Mito!

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With a few words, the protagonist carries the soul of Uzumaki Mito, and awakens the very grassy “Grass Dun”.

The magnificent Mrs. Hokage… In order to make the Senju clan great again, to protect Konoha and even the ninja world, and to prevent the protagonist from spoiling this world, I have broken my heart.

- Description from novelbuddy

A failed investor from 2017 got drunk and woke up in the 1980s. China is just opening up, and the economy is blooming. There is also the dissolution of the Soviet Union, the bursting of the Dot-com bubble and other financial crisis. He used his knowledge of the future and slowly build up his empire.