Rich Family's Substitute Sweetheart - Chapter 359

Roy’s life was nothing special. The only thing commendable was the last few moments when he saved a mother and her child from a drunk driver.
…
It’s really an egg! Damn it, what kind of monster have I become? Did I fall into Hell instead of making it to Heaven??
Join Roy as he ventures through various worlds with the Custom Made Demon King System—a system that allows Roy to draw anything he can imagine and create it through exchanging souls!

In the tenth year after the new era, the world finally came to an end. Zhang Mu truefully waited for his death, but unexpectedly found that he had returned to ten years ago. With his memory about the future, he swore that he would change the calamitous history, saving the earth from being destroyed! Walking dead, zergs, evolvers, and various mutated animals… nothing can stop him! The first step is to retrieve his identity as an era merchant , then find all the treasures he can remember to enhance himself!

- Description from Novelupdates

That day, the breath of the great whale dispersed the fog, and a new era arrived.Chen Qi accidentally transmigrated into the steampunk-apocalyptic game world of 'New Sun,' starting with the monstrous talent “Deep Sea Affinity,” where ancient deep-sea creatures saw him as one of their own.Although he possessed the talents of a monster, as a transmigrator, he still maintained the original intentions of humanity, striving to level up with the firm resolve to become a world-renowned Monster Hunter.Finally, after his relentless efforts, the popular Dove Times sharply commented:“From the ancient deep sea, a scoundrel with evil bloodlines who threatens witches with tentacles, the arrogant lone Emperor of the Fifth, who aims to conquer the Witch Sea!”False news, blatant false news!Even though he grew tentacles, threatened witches, raised sea dragons, collected tolls, and sang the death chorus with sea monsters.He was truly not of any Deep Sea Ancient God's bloodline but a dedicated and responsible Hunter.Chen Qi cut down the fleet before him and earnestly clarified.

I, a HIKKI-NEET, suddenly reincarnated in another world as a prince, and was immediately deemed the weakest ever, with my life already in a pinch after being abandoned as a baby, being stared down by a huge beast!?

However, I could only use one kind of magic. It was close, but I was able to avoid a “dead end” in my first few days of being born using that magic.

Anyways, I just want to live a lazy shut-in life as an adopted noble with my one all-purpose magic, but…?