The Main Characters That Only I Know - Chapter 219:

Karl, a young man stuck in a rough patch after losing his job and burning through almost all his savings, wandered through the cold, dark streets of Eldoria. On the damp, silent sidewalks, he stumbled upon something bizarre: an old gacha machine mysteriously appearing at every corner he turned, almost as if it was following him. Driven by a mix of curiosity and the overwhelming weirdness of the situation, Karl finally gave in and used his last bit of money on the machine. From the gacha ball, he pulled out a card with a barcode.Back in his cramped apartment, curiosity finally won over caution, and Karl scanned the barcode. To his shock, an app called “Common Sense Manipulation App” installed itself on his phone, claiming it could alter people's “common sense.”------Support Me By Gifts or Power Stones-----

At 18, Alex Kain is whisked away to Eryndor, a game-like realm where he gains 'Skill Synthesis', a talent to fuse skills into godlike powers. Battling monsters and conquering dungeons, he builds a harem of strong women drawn to his might and charm. With the power to return to Earth bearing incredible resources, Alex faces a growing threat that endangers both worlds in this epic of adventure, romance, and ambition.

Procedural Memory: a type of implicit memory (unconscious, long-term memory) which aids the performance of particular types of tasks without conscious awareness of these previous experiences.

“No matter how much I search on the Internet, there is nothing that that even remotely mentions the phenomenon I am currently experiencing.”

“The ability to use someone else’s Procedural Memory at will, what do you even call that phenomenon?”

Park Dowook, a doctor who is able to use the Procedural Memory of others as if it was his own. His special one-of-a-kind treatment begins now!

Having been reborn, she takes one glance at her ridiculously handsome husband and wonders if she had suffered from brain damage back then—she had actually demanded for a divorce with him. Repeatedly!

In her previous life, she had been deceived by her relatives who eventually led her to her tragic death. With this second chance at life, she vows to cozy up to her husband both literally and figuratively to destroy all her enemies and to take down the women who hid behind their scheming, innocent facades. She would be in control of her own happiness!

This is a sweet, doting love story featuring an intelligent female lead and a perfect male lead who’s good at turning her knobs.

- Description from Webnovel