Huangfu Longdou, capable of traversing countless worlds, relies on a side-effect transfer system to continuously travel and level up. He experiences various worlds: the technological muscle-building abilities of the Kengan world, the spider-like powers causing the death of loved ones, the Green Goblin serum's second personality, the technological serums of Shaolin Soccer, the internal energy conflicts of the Star Absorbing Technique, the internal organ damage of the Seven Injury Fist, the disfigurement and poisoning of the Thousand Spider Poison Hand, the Star Absorbing and body explosion of the Amazing Couple, the Shennong Sect's poisons of The Great Laughing Jianghu, the Crimson Fire Divine Skill of the Storm Riders world, the Lizard Serum of The Amazing Spider-Man, the Devil Fruits of the One Piece world, the God Genes of the Corpse Brother world, the Pure Dharma of Mount Shu, the Fenji Sword with its malevolent energy, the monster cells of the One-Punch Man world, and the Iron Man world...

[Harem][Multiple Heroines] Jiang Yan is reborn in the world of Swallowed Star, obtaining the [Heaven Rewards Diligence] system. Every effort yields a reward! Furthermore, there's a critical hit rule, with rewards reaching billions of times! [Ding! Your diligent cultivation of the Ninefold Thunder Blade has triggered a critical hit rule, granting you a hundredfold reward!] [Ding! Your diligent cultivation of the Void Tower has triggered a critical hit rule, granting you a thousandfold reward!] [Ding! Your diligent cultivation of the Thunder Domain has triggered a critical hit rule, granting you ten thousandfold reward!] [Ding! Your diligent cultivation of the Ranks Technique has triggered a critical hit rule, granting you billions of times reward!] Years later, when Jiang Yan stands atop the Primordial Chaos, someone asks, "How can one become like you?"

Qi Tian was reborn into the Douluo Continent, awakening the Blue Silver Grass Martial Soul with an innate Soul Power of 0.5. With such aptitude, even becoming a Soul Master would be difficult, leaving Qi Tian resentful. Fortunately, he possessed a system, allowing his soul to possess the bodies of geniuses in parallel worlds, cultivating by borrowing their talents. [Possessing Bibi Dong, reward: Second Martial Soul.] [Possessing Liu Erlong, reward: True Dragon Physique.] [Possessing...] "System, didn't you say parallel worlds? Why are they all acting strangely?" [Douluo Continent Fanfic]