Level 4 Human in a Ruined World - Chapter 11

Akira Kisaragi traverses into the Bleach world, unlocking a check-in system.He initially thought that by checking in daily, he could become stronger, soon become the Captain-Commander, join Division Zero, punch Yhwach, kick the Soul King, and marry Unohana...However, the system's style wasn't quite what he had imagined.〈 Check-in complete, obtained Genryūsai Yamamoto's secret roasted sweet potato! 〉〈 Check-in complete, obtained exclusive attribute: King of Normal Attacks, effect... 〉〈 Check-in complete, obtained Retsu Unohana's... 〉Akira's eyes suddenly lit up!“Seems like this might not be so bad after all!”

Yang Yi crossed over the world with a storage space with him. He ended up in some desolate wilderness populated by flying beasts and dangerous predators and also crawling poisonous bugs and snakes. To prevent getting bitten in the ass by venomous bugs when going to the toilet, let the great infrastructure begins –
Our goals are:
Eat well till full stomach.
Having clothes to wear but also being good looking.
To have a house that could cover all seasons.
Roads that leads to every place; develop agriculture, industry and commerce together.
No shortage of both material and spiritual needs.
He was DETERMINED to build a safe, comfortable and prosperous modern city in the wild world together with the native tribe with max efforts.

- Description from Novelupdates

Pressured to get married or lose her father's financial support to pay for her mother's medical bills, Joanna Baker, the illegitimate daughter of the Baker family, is devastated when her boyfriend chooses another woman over her on their wedding day.Joanna, feeling distraught, witnesses a man in a wheelchair proposing to his girlfriend at a restaurant. The girlfriend's rejection and subsequent insult for his disability left everyone stunned.Feeling a shared sense of betrayal, she approaches the man with a vengeful proposition.“Excuse me, sir. Your girlfriend dumped you, and my boyfriend chose another woman over me. Let's get married for six months and get revenge on them.”What will Joanna do when she finds out the man she proposed marriage to was none other than Alexander King, the heir of the wealthiest family in NYC? He was also the cold CEO of King Multinational, with a hidden identity, Salvatore Black, whose name caused even presidents shiver? Has she just signed a deal with the devil?

I gave them my everything.My time… my strength… my heart.I trained while they slept.I smiled when they laughed.I stayed… even when it hurt.And what did I get?Nothing.They looked at me like I was pathetic.Like, I didn’t belong.Like I was… less.But I... the naive person I am, continued trusting them.They told me to act like trash, fine—I became trash.They told me to act like a scumbag, fine—I played the role.However...One mistake, one single moment...That’s all it took.And they threw me away.But now…Someone else woke up in my body.A stranger, a man who doesn’t know the pain I suffered, but wears my face.Let’s see what he does with it.Because me?I’m done with this life, so to the soul who took over my body...This is your mess now…'Gray'.