Gimai Seikatsu - Days With My Step Sister - Chapter 45:

A normal office worker, Toru Minasuki, was swallowed up by a dimensional fissure and reincarnated into a different world. Upon reincarnation, Toru was given a [skill board] by God. Make the most of it to acquire all the necessary skills! Even though he is an “inferior person,” he’ll make his way to the top!

Hugo Fernandez, a short, skinny virgin with zero charm, was a young man with grand dreams. He had just started college and was brimming with hope for a bright future, but a rather unfortunate food poisoning ’incident’ soon turned his life from bad to worse. He experienced a social death! Out of the blue, a mysterious girl’s voice echoed in his head: [Ding! Fate has aligned, and your woeful destiny with women has reached the heavens! You have been granted the Ultimate Harem System!!!] Hugo’s listless eyes widened. Had he finally received his own cheat code? Was it time for him to ascend to the heavens in a single leap and start attracting women left and right? The mysterious voice spoke again: [Ding! Initialising Death mission... Seduce a 7+ woman within one month or die!] Hugo blinked, his jaw dropping. “Wait, what? Seduce a 7+ woman or die? What kind of medieval torture is this? I can’t even seduce my reflection!” After taking a minute to calm down, he realised it wasn’t as bad as he thought. “In the worst case, I can burrow some money and get a pro-” [No pay pigging] Hugo realised he was soon going to experience a real death! This system was out for his blood! [Tick tock, Romeo. Time’s wasting…] “I’m gonna die!” Join Hugo on a captivating, deadly journey filled with debauchery, womanising, and thrilling level-ups as he rises above all and becomes a Supreme Casanova! If he doesn’t die first, that is…

Mechanics fix things.Fighters break ‘em.Those were the two truths Perry lived back on Earth. When he got isekai’d into a young noble with newfound magical powers, he found himself stuck with an awful choice. Try to survive on the Front, the mystical battleground where Hydras and Devils roamed free… Or find another way.So he took an oath. An oath that made him a Magus Dominus. A mage lord. He’d escaped his fate, least for the moment.For most his life, Perry was used to being alone. When he got sucked into Ro'an, he was suddenly thrust into the role of surrogate son to his loyal servant and half-brother to a tempestuous Storm mage. With their help, Perry prepared his best to be lord and protector for his domain. And if he fought a few monsters, and helped a few people along the way, well…Mechanics fix things. And fighters break ‘em.-Progression Fantasy with light LitRPG elements-No romance-Kingdom building and magic progression

This is the era where people prioritize science and Martial Dao. After the great disaster, the human race discovered the Ancient Zenith civilization. They entered the Age of Great Cultivation and began their journey to colonize the Kunlun Realm!