Even Without the Symbiotic Demon, This Old Man Is Still Invincible

Synopsis: (Invincible + ageless youth + no female lead + transmigration + wish-fulfillment) Another world, Blue Star: this is a strange place. Symbiotes exist in this world, and when people come of age, there is a chance they can form a contract with one. Once humans make a contract with a symbiote, they gain its abilities. Lin Yi transmigrated to Blue Star five hundred years ago and contracted with a symbiotic demon called the Abyss-Eating Black Fiend. The Abyss-Eating Black Fiend possesses a special ability: devouring. It can devour anything and grow stronger by doing so. With the Black Fiend's help, Lin Yi went from an ordinary man to a Mythic Realm powerhouse in just 250 years. He also became the strongest person on Blue Star. Two hundred and fifty years later, the passage to the Dark Continent guarded by Lin Yi stirred, and large numbers of otherworldly races tried to invade Blue Star. But Lin Yi would never let them have their way. He fought the nine great foreign-race God Emperors alone. In that battle, Lin Yi drove them back, killing three God Emperors and gravely wounding two more. Not long after the battle, however, Lin Yi's symbiotic demon left him and returned to its own world. The realms are divided into: First through Ninth Order, Transcendent Realm, Sovereign Realm, Legendary Realm, and Mythic Realm.