This is really not mechanical ascension - Chapter 31 - Control the Sniper Rifle!

Where there is light there shall be darkness

Hero? Nahh I'm the demon.

In a world where the demons are looked on as the incarnation of evil, the human-demon war raged on across the whole continent.

The Seraphims, protector of humanity, and the Demon lords who rule across all demonkind. Amidst all the chaos, Simon was reincarnated as the lowest ranking demon noble.

A brutal world where the strong feeds on the weak, eat or be eaten, kill or be killed. A demon far off from humanity….a dream unfulfilled in his previous life will be achieved in this life. Taking on the moniker of Laplace, he destroys all his enemies and rise over them.

System: You are now a lowly male supporting role, a passerby who wants to go offline at any time, please keep secretly and grow vulgarly.
Shi Yan: Very good, thank you for your suggestion.
The first world: Shi Yan, as a little prince born in a cold palace, made himself an emperor.
The original male and female protagonists, under his witness, became grudge couples.
The second world: Shi Yan, as the youngest son of the princess who died tragically, made himself a powerful minister over ten thousand people.
The original male and female protagonists, under his witness, became grudge couples.
The nth world: Shi Yan, as a genius in the world of comprehension, has made himself the number one powerhouse in the Three Realms.
The original male and female protagonists, under his witness, became grudge couples.
The system feels that something is wrong.
Shi Yan instead persuaded him: Let the male and female protagonists come together in the end no matter what the circumstances are, isn’t it the self-cultivation of the tool man and the male partner?

Content tags: Kuaichuan Shuangwen Metaphysics
Search keywords: Protagonist: Shi Yan ┃ Supporting role: ┃ Others:
One sentence introduction: The male partner is beautiful alone
Purpose: strong heart, unmoved by wind and rain

- Description from novelbuddy

Qin Mian opened his eyes and found himself lying in a leaky thatched room. The problem was that he was still in his family’s villa beforehand! What’s more, there was another man lying next to his leg in the quilt!

“You, you, who are you?”

The man sat up quietly, his upper body exposed as looked at Qin Mian for a moment before he carried a worn out bowl with a cracked corner from the low table at the head of the bed. The man said in a muffled voice, “Wife, drink water.”

Qin Mian’s eyes rolled backwards and he passed out.

—
TN:
Title explanation: 勉为其男 [miǎn wéi qí nán] have the same sound as 勉为其难 [miǎn wéi qí nán] which means to do something reluctantly. 勉 [miǎn] is also part of MC’s name: Qin Mian.  Also, 其[qí ] sounds the same as 妻 [qi] means wife. So, there are words plays. Basically, Qin Mian reluctantly becomes someone’s man [wife] after he transmigrated.

Lin Ziyin, modern day mechanical professor especially hired by the school, had the potential for great achievement in her field. However, due to family reasons, she could only treat her mechanical research and teaching as a secondary job, pouring all her energy into the farm and the food business before. Despite her low-key approach, she was unable to suppress her sister's rage, and a furious car crash sent her straight to ancient times.Indeed, she had excellent character, so why did the heavens send her to the sparsely populated Northern Land. Known as the death zone, those who were banished to this borderland would spend their lives and perish there. However, Lin Ziyin was quite satisfied with her own identity. Even if she had lost the protection of her parents, she still had the protection of her siblings and grandfather. Of course, she also had her younger brother and nephew at home who needed her protection. This abundance of familial love was enough to compensate for the hardships caused by poverty at home.Poverty, she wasn't afraid of, as she had experience in farming. With large swathes of uncultivated land, the Northern Land was practically custom-made for her. The heavy workload didn't matter either, she was proficient in designing all kinds of small tools. Whether it was the emperor's absurdity, not providing aid to the border king, or the shameless Tatars that would rob them frequently, none of these posed a problem for her. She could think of solutions for everything. It wasn't uncommon for the border king to tell everyone how lucky he was to have married such a wonderful queen!