This is really not mechanical ascension - Chapter 81 - 74 Chen Songnan, Whose Worldview is Shattered, 30,000 Points of Metal Energy!_4

27-year-old Hisha, transmigrates into the body of a thousand-year-old overpowered supreme overlord who had everything at his disposal, except one–worthy companions by his side.

Hence, a tournament was held to choose the best out of the most beautiful, unique and strong women across the land.

These women don't follow the rule of coexisting women in a harem, they fight for the right to bed their lord and would stop at nothing but to use every opportunity to seduce, and fight on his behalf just to get his attention and favor.

Hisha never liked such a barbaric method of getting a companion.

'Why choose a few, if you can have them all?'

'If he can't have them all, he would try to work out coexisting the strongest for his pleasure and benefit.'

He realizes his 'Desire System' levels him up with every adoration gotten from his harem. The stronger they get, the higher his level and hold in his world.

As he continues to break his limits with the help of his harem, he finds out there are others that threaten his rule and the balance of his land.

'Let the tournament begin!'

Mu Yue traveled to the world of Naruto and became an ordinary chuunin teacher at Konoha Ninja School and a member of the Root Organization.

Fortunately, after awakening the teacher system, you can become stronger by teaching.

In order not to become Danzo’s consumables, Mu Yue worked hard to teach and increase her strength.

“Complete the teaching rated A for the first time and receive the reward – mastery of fire attribute chakra properties change.”

“Under your guidance, Uchiha Shisui has worked hard to practice, and his overall strength has been greatly improved, and he has been rewarded – the Immortal Human Body!”

Under Mu Yue’s guidance, Zhishui understood that the village’s enemies were not necessarily other big countries, but could also be within the village. People who spoke righteously about the will of fire might not necessarily act in accordance with the will of fire.

Obito got rid of the title of being the weakest person in the ninja school, and Metkai became a master of physical skills even earlier…

- Description from novelbuddy

Thrust into an enigmatic world born from bloodshed; venture inside its complexities, dark-side, and always changing nature. At the center, a boy; brought up by an exiled mage, steps into a life of independence. A test to try and change his life for the better after witnessing what war can do to a person. The walk towards finding a stable living gets toppled as a unique magical element awakens. Using people, toying with emotions, doing anything and everything to get what he wants, this is the life of the next Death Reaper. Mostly emotionless, life continues as questions about his state of mind and being remains clouded behind many personas.

This isn’t the story of a single man, it’s the story of a whole world. Read as the world builds itself from the ground up. Conspiracies, evil, the dark side of humanity. In addition, tis the start of a new age; the birth of monsters – a story depicting the tales of the first heroes and demons to ever exist.

The Wielder of Death Magic isn’t a typical fantasy. The heroes don’t summon forth power from heroes of old, here, the characters are the ones who make up the myths and legends for the next generation. Amidst the turmoil, Staxius, he lives on, watching and waiting as the world grows.

A guy became a brother of Iron man and got the ability to extract genes from anyone. Lets see how he changed the Marvel World

- Description from Novelupdates