One Piece: Capitalist Brook's Crew Expansion Plan - Chapter 94: Waters

I was transmigrated into a webtoon based on an alternate history of a shitty empire.‘I will overthrow this country with my own hands.’And the answer I arrived at upon experiencing it was ‘Coup D’état’.

The aristocratic Lu family has produced a joke, a beautiful one, but a joke nonetheless. The daughter they have been rearing all this while turns out to be an imposter! With the real heiress returning to take her rightful place, everyone is eager to know the outcome of the imposter…Will she be able to survive in poverty after living a life of riches?Having just transmigrated, Huo Yao imagines that this experience will be pretty interesting. However, imagination and reality are always so different!Dad: “Daughter! Take this black card. It has no limit! Use it freely.”Mom: “My dear Yao Yao! If you don’t like this jewelry, I’ll get them to change it immediately.”Huo Yao: “…”Weren’t they supposed to be poor and ordinary? What is with this hidden lavish behavior?Her eldest brother, an investment company’s CEO: “Sis, inherit my company!”Her second brother, a top lawyer: “Whoever dares slander my sis will face the full brunt of the law!”The third brother, an international genius doctor: “Bullying my sister? Should I display the prowess of my scalpel?”Mysterious fourth brother: “My sis is the cutest!”Huo Yao: “…”What happened to being a good-for-nothing person who lives off her parents?A top aristocrat secretly changes into his cheap clothes and drives his crappy old car to her. “Baby, my heart is yours. Why don’t we get married to test if I’m telling the truth or not?”Everyone who knows about it, doesn’t dare say it out loud.All they can do is curse inwardly: “Bah! Keep acting! No one believes it!”

A Federation Colonel with abnormal thoughts was locked in a dark room and met a little looney.

“Your whole body emits a scent that I dread (covet) and fear (desire).”

A frigid Colonel X little looney roommate: A sweet story of interstellar travel

- Description from Novelupdates

After losing his parents to an accident, Haruto is thrust into a state of depression. Realizing he never had the power to change things, he eventually took his own life. Before moving on, he’s selected by beings greater than his understanding to balance out a world suddenly facing peril. The world of Mordell, where demon-like creatures and beasts roam, and Guilds of ability users called Warlords are the force to combat these creatures. Armed with the power to change things, he has the choice. Continue living in despair or accept his second chance and become a true Warlord.