How To Be A Demon lord: The Former Hero's Journey As A Demon Lord! - Chapter 145 Picking A Companion

Ren Xingliu transmigrated into a world in troubled times, struggled for half of his lifetime, and eventually achieved success and recognition, working as a good general and minister. Then he returned to modern times, when he was just about to graduate from university.Ren Xingliu who had his fill of wind and frost: I’m beat. Simplicity is the way to go.—Ren Xingliu, the ignorant, incompetent, reckless and daring young master of the Ren Family, was about to graduate. Everyone was waiting to watch him turn the Ren Family completely on its head. One with malicious intentions even deliberately introduced him to an honest person without status or background, Bai Juanqiu.Never did he expect Ren Xingliu to be so content with this honest person.Ren Xingliu: He seemed to be someone who could live a carefree life with. Alright, let’s make do with this.Bai Juanqiu had been putting on his honest persona for twenty years, but those people still wouldn’t let him live in peace and went ahead and introduced him to a notorious silk pants. Bai Juanqiu decided to stop pretending.Afterward…Bai Juanqiu: Well, let me just eat my delicious words, because I can keep pretending for two more years.

Going for a swim, she ends up in an ancient wild Beast World and ends up being brought home by a handsome wolf.
She wants to stick to the handsome wolf, stock some salt, farm some land, look at some handsome men and grow old like that, but the handsome wolf pounces on her every day.
What? He wants her to have babies?
NO~ NO~ NO~ There is no happy ending to interspecies marriages, hurry and let go of me handsome wolf~

- Description from Novelupdates

A girl who calls herself a demon appeared before a timid student named Fumio Kijima. The girl claims to be a campaign girl from the demon world and she gives him the ability to “summon a room” from nothing but thin air.

At first he doesn’t abuse his power and uses it as a convenient ability in his every day life. But one day he is bullied by his classmates under a false pretext and is made to suffer. In the past he would have wallowed in misery and cried himself to sleep, but now he had a power to call upon.

“I will make them regret it!”

Using his powers to summon his “room”, he begins his era of confinement and brainwashing to achieve his goals.

'Nina?'The thought hit me before I even really processed who it was. Nina Shoka from my class. She was just walking along, probably listening to music, totally unaware that this car had lost control and was sliding right toward her.I didn't think about it. Didn't weigh the pros and cons or consider my options. My legs just started moving.I dropped my phone and sprinted toward her. The car was maybe three seconds away from hitting her when I slammed into her side, pushing her as hard as I could toward the sidewalk.She went flying, landing hard on the concrete but definitely out of the car's path.Me? Not so lucky.The impact felt like getting hit by a train. One second I was pushing Nina to safety, the next I was flying through the air. Then I hit the ground and everything went wrong at once.I couldn't move my legs. Couldn't really move much of anything, actually. There was this weird warm feeling spreading across my chest and stomach, and when I tried to breathe, it felt like drowning.'Well, this sucks,' I thought, staring up at the sky. 'Guess that's what I get for being a hero.'My vision started getting all swimmy and weird, but I could make out Nina crawling over to me. She had pulled out her earbuds and there were tears streaming down her face.“Why did you do that?” she kept asking, over and over. “Why would you do that?”I wanted to shrug, but my shoulders weren't really cooperating. It seemed pretty obvious to me - she was in trouble, so I helped. That's what you do, right? Nothing fancy about it.She was talking to me, saying my name a lot. I didn't realize she even knew my name, to be honest. We had been in the same class for like three months and I don't think we had ever actually had a conversation.“Kofi, stay with me, okay?” she was saying. “You're gonna be fine. The ambulance is coming.”