It’s Lonely To Be Invincible - Chapter 1043

In the rebirth, in order to prevent the tragedy of the previous life from happening, Bai Yu decided to rush to the [Tower of God] at any cost, and face everything together with his sister!

However, Bai Yu, who was bound by the system, mutated his bloodline, and transformed into a black-scaled python seems to be developing on a completely different path from his previous life…

- Description from novelbuddy

When the Soul Plague arrived, it struck fast, transforming its victims into soulless monsters. The horde swept across the land unchecked—until the Awakened appeared. These survivors, immune to the plague, turned the tide of war into a bloody stalemate. But while the front lines held, the plague continued to spread and the horde only grew in number.Desperate for reinforcements, the World Government began conducting controlled infections of its able-bodied citizens to produce more Awakened. Hill was one of the conscripts. After going through a harrowing trial induced by the plague, his life was torn apart and remade: he emerged Awakened, endowed with strange new powers—but also bound by a dark curse that resides deep within his own soul.As Hill learns to wield his abilities alongside fellow survivors, he uncovers unsettling truths about the plague’s true nature and the hidden price of becoming one of humanity’s last line of defense.

Elliot Hawthorne, had transmigrated into the body of a struggling apprentice mage, and now had one simple goal, summon a small, harmless spirit to pass his magic academy’s final exam. But thanks to a mistranslation in an ancient grimoire, he instead summons Azrael, the almighty Demon King.That would’ve been bad enough…. but then the spell accidentally binds them in an unbreakable marriage contract.Now, Elliot is stuck with a possessive, dangerously powerful, and ridiculously affectionate demon husband who:Carries him everywhere because “His cute little summoner’s feet shouldn’t touch the ground.”Summons hellfire just to keep Elliot warm when he complains about the cold.Declares war on any kingdom that dares to call Elliot “single.”Refuses to be unsummoned.“Why would I leave? My husband is here.”Worse, every holy knight, exorcist, and jealous god now wants Elliot dead for “stealing” the most powerful demon in existence.. Stuck with a one-in-a-million system dungeon and a devilish Demon husband, Elliott's life is constantly on the brink of disaster...But when Elliot starts uncovering secrets about the contract, he realizes…Did I really summon him by accident? Or… was Azrael waiting for me all along?One way or another, Elliott’s unlucky life becomes worse. An impending doom threatens the existence of the human and mortal worlds.And as if that wasn’t enough, he’s also stuck with a Demon for a husband.But maybe, just maybe… being bound to a dangerously powerful Demon King isn’t the worst fate after all.