Blackstone Code - Chapter 21:

When a boy in a medieval fantasy world wakes up with the memories of his past life, he discovers a secret buried deep within his mind—a highly advanced AI companion. This AI, a relic of his previous existence, holds the knowledge of a futuristic world filled with technology, science, and innovation.Armed with this unprecedented advantage, the boy embarks on an extraordinary journey to transform his medieval surroundings into a thriving futuristic utopia. From reinventing agriculture to creating advanced cities, he introduces ideas far beyond the comprehension of his peers. But his vision isn't without challenges—power-hungry nobles, skeptical commoners, and ancient magical forces stand in his way.

Six years ago, the legitimate daughter of the Chu Family was schemed against by her half-sister and was forced to marry the Princely Heir, who was blind and not long for this world.Fortunately, her medical skills were excellent, and she detoxified the Princely Heir.Who would have thought after he came back to life, the emperor would actually want to bestow a concubine upon him—and this jerk didn't even refuse.Furious, she left a divorce letter and then set the Prince Residence on fire, fleeing in haste.Six years later, the same Princely Heir remained a lonely man, with all his old servants worrying their hearts out.One day, upon encountering a Little Baozi on the street who looked strikingly like the Princely Heir, they instantly burst into tears.“The Prince Residence has a successor! Princely Heir, please come back with us to the Prince Residence quickly.”Who knew, Little Baozi disdainfully said, “Not interested.”“Princely Heir, the Prince Residence is immensely wealthy...”“My mother is the wealthiest person!”“Princely Heir, the Prince Residence is extremely safe...”“My mother is the Martial Arts Alliance Hierarch!”“Princely Heir, the Prince Residence has powerful armies...”“My mother is the heir to the Nanduan Kingdom!”Suddenly, a faint voice came from behind: “Then, does your mother need an Imperial Consort? I think myself quite suitable.”

At home, she was invisible; after marriage, she was a decorative vase; in the end, a sea of flames buried her, and not even her corpse remained. This is the portrait of Han Yuxi’s previous lifetime.

Given a chance at rebirth, she strives to improve herself, wishing only to no longer serve as a foil or a pretty face. Then, she will seek out an exemplary husband and live a life of peace and prosperity. Alas, things turn out contrary to her wishes—she marries a man who bears a blood feud and hatred as deep as the sea.

She turns the world upside-down, but her road to happiness is strewn with setbacks and the sweetness that comes after bitterness.

- Description from Novelupdates

Lucas Tanaka, a 30-year-old Japanese man who gave up his dream of becoming a soccer player, lives a monotonous life in Tokyo. After an act of bravery that results in a fatal wound, a glowing screen appears in front of him. [The skill “System” has been granted.] [“System” unlocked.] [The skill “System” has given to you the skill “Supernatural Resistance”.] [“Supernatural Resistance” unlocked.] [Thanks to the divine effect of “Supernatural Resistance”, from now on death is no longer a problem for you]. When Lucas wakes up, he finds himself on a vast soccer field, back in his youth, in the middle of a match with his childhood friend. With new skills and an unexpected chance to relive his dreams, Lucas is faced with the opportunity to redefine his destiny, but first he must overcome the normal challenges of a young soccer player, such as becoming a starter, winning the regional championship and become a professional soccer player! [The hidden function of the skill “Champion System” has been unlocked.] [The skill of “Replicator Genius” has been granted]. [“Replicator Genius” unlocked]. __________ What you can expect: Action, well-developed relationships, an MC who has attitude, a complex system that evolves, an MC who gets really strong, Slice of Life, manga content. The MC is proactive, he knows how to adapt, but he’s not a genius who knows literally every possible future for all his actions.