MTL - Little Mermaid Dressed As a Scientist - Chapter 5

Dumped by his girlfriend for being broke, killed in an accident by a truck, only to get transmigrated into a fantasy world as Lucien Goldveil, noble heir of a rich nobility in the kingdom of Edoria.He should be content since he was now filthy rich, but he couldn't, as this world was a world of magic where money without power was only a curse.What he would face next would only be endless conflict and the hounds looking at his wealth with those hungry gazes.---Ding[Debt Collector System has been successfully bound.][Detected failure to collect debt from target: Alchemist Devan.][Automatically extracting compensation of equivalent value…][Congratulations! You gained: Minor Mana Sensitivity (Passive), +1 Intelligence.]---Fortunately, his system came on time, giving him that glimmer of hope. Now, it all depends on his ability to exchange his vast wealth for power by playing his cards right.With the kingdom teetering on the brink of war and the Godveil family surrounded by hungry wolves, Lucien had no choice but to grow stronger and fast.Not to mention finding those behind the shadows hellbent on killing him, or those trying to kidnap him for his wealth. Wealth without power was a curse, and it was on Lucien to change it into a blessing instead.And those dungeons… Wait a minute—why the heck does this world have so many dungeons?

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

- Description from Novelupdates

In a certain world, there was someone who excelled in magic combat, people called him 『Sage』. Seeking the strongest combat art, he devoted himself to research every magic and combat arts in existence. And the conclusion he arrived at was very cruel, 『My body is not fit for magic combat』. Yet he didn’t give up. He sealed his own soul with a magic art, and was reborn in a far-off future. And the magic theory in the completely changed world he saw there was of unbelievably low level.

〔Congratulations, for mating with a Queen Bee you got a new achievement: ”Not a virgin”! Your reward: “Drone Consort” title.〕‘Hey! I wasn’t a virgin before this, system!’Imagine that you lived a painfully average life, died by a stupid, stupid accident, but a goddess interfered and gave you a second chance in another world.There, you became a consort of a beautiful, big-chested queen, and your only job is to have mind-blowing sex with her so she could have thousands of your adorable daughters. In return, you can live in peace and luxury for the rest of your days.Which means, for about two months. Because I’m a bee. And my queen is also a bee. And bees don’t live for long.The only way to increase my lifespan is to develop my bee colony. A hard task in this huge world filled with dangerous and hungry beasts, other war-hungry insect tribes, and natural disasters.But I have a hundred thousand daughters, some actual brains, and with superior genes given to me by my system, we will be unstoppable!===Note: no NTR, harem, incest, or outright smut.