One Piece - I Am A Different Luffy! - Chapter 42 - 41 – Baratie 04.

Yang Feng somehow transmigrated into a different world and received a legacy of an ‘ancient high tech’ family, which does not directly raise his power, but gives him the technology to build things which are way more advanced than the seemingly medieval world.

But to build something you need resources and energy. To receive resources you need strength. To gain strength you need knowledge. To gain knowledge you… need strength? or a background? Or maybe a fully armed army of high tech robots who aren’t afraid of death?

But is this legacy really for him to keep?

- Description from Novelupdates

10 years ago, after “the Gate” that connected the real world with the monster world opened, some of the ordinary, everyday people received the power to hunt monsters within the Gate. They are known as “Hunters”. However, not all Hunters are powerful. My name is Sung Jin-Woo, an E-rank Hunter. I’m someone who has to risk his life in the lowliest of dungeons, the “World’s Weakest”. Having no skills whatsoever to display, I barely earned the required money by fighting in low-leveled dungeons… at least until I found a hidden dungeon with the hardest difficulty within the D-rank dungeons! In the end, as I was accepting death, I suddenly received a strange power, a quest log that only I could see, a secret to leveling up that only I know about! If I trained in accordance with my quests and hunted monsters, my level would rise. Changing from the weakest Hunter to the strongest S-rank Hunter!

[Female Lead: Little Princess of the Cat Demon Clan] “Get off of me,” the man's voice carried a hint of helplessness and restraint.“I won't,” the girl shook her head, her arms tightly holding onto the man beneath her.“Be good, I can't sleep like this.”“But I always slept on top of you before.”“That was different... you're a human now.”In Capital City, a decisive, cruel, and cold-blooded mysterious head of the household unexpectedly gets saved by a tiny kitten, hence turning into a devoted slave to the cat, shocking all his subordinates.However, when one day he woke up to find the kitten in his arms had turned into a lovely and soft young girl, the head of the household was dumbstruck.Ask what's going on? Of course, it's a nurture story~Ask what to do? Naturally, continue to spoil her, just in a different way~“Young Master, everyone outside is saying that you have some special fetish. Why else would you spoil a cat to such an outrageously lawless degree?”The head of the household declared, “You know nothing, that's my wife.”This book is free of stale tropes, with fresh material, and is clean in regards to relationships. [The new book “Mr. Lu Has Made the Blacklist Again” has been released]