Kyoukai Senjou no Horizon - Volume 8A, Chapter 17: Realizer at a Standstill

Su Mo, a late bloomer, was introverted and bad at socializing with strangers.He thought his life would stay pretty ordinary, but everything changed when he started playing the popular game Star Ring. He unexpectedly rediscovered the joys of life and set off on a journey to claim the throne.

I possessed a minor character who marries the prince. I’m not thrilled about it. The prince is a scumbag who flirts with the heroine despite being engaged and eventually gets defeated by the original male lead. In the epilogue, all he does is apologize to his fiancée and marry her, with barely a line to his name. Well, his personality is twisted, but at least he’s handsome. And since he’s the third prince, he doesn’t have to shoulder the burden of ruling the kingdom. That’s decent husband material, I suppose. Go ahead, make a fool of yourself. You’re going to marry me anyway. I’ll just sit back and enjoy watching your embarrassing history unfold. “Doris Redfield. Don’t expect me to ask you to dance at this ball. Maybe not at the next one either. Or the one after that.” “Yes, Your Highness. As you wish.” “Even though we’re engaged… wait, what?” “It’s just a joke proposal our parents once tossed around, isn’t it? You don’t need to take it seriously, Your Highness. I’m really fine with it.” “…Is that so? Yes, that’s… fine, right?” Why are you panicking, prince? You started spouting nonsense first. Where’s your conscience? But then, this guy really has the audacity to ask something outrageous. “…Do you, perhaps, have another man?” The guy who flirted with the original heroine is saying this now? Calm down. He’ll regret this later. All I need to do is remain a devoted fiancée until then. “What are you talking about? A woman like me… plain, not beautiful, with a gloomy personality, what man would even—” “What? Who dared to say that about you?” …You did, in the original story. This guy is acting weird. But he’s not the only problem. “My dear little sister Doris, that dress you’re wearing today is dreadful. No wonder there are rumors His Highness has abandoned you.” “Well, it can’t be helped. His Highness is too good for me anyway.” “…Hold on. Too good? Who said that? Wait, were you really dumped?” The original villainess, who also happens to be my older sister, Natalie, is suddenly interested in my love life. Why are all the original tr*shy characters growling at each other over me now?!

This is a ‘rebirth’ story where Chen Rong, the heroine, finds her second chance at life after burning herself to death. Set in the Eastern Jin era when bureaucrats and their lofty yet equally hypocritical and oppressive ideas once ruled the empire, Chen Rong is made to use her past life’s experience to survive and hopefully find happiness this time around.

- Description from Novelupdates

The sinful act of Humanity brings forth a great calamity towards themselves, or so they thought.

Supernatural Emergence happened,

Supernatural Creatures start to come out of nowhere and forcefully claim half of the Earth and massacre any humans that crossed their paths. The Supernatural Creatures are way too powerful, dozens of countries fall under their diabolic claws. Humanity was pushed against the corner.

But things started to turn around when Humanity begins to Awaken magical power blessed by the gods. They are the pillar of humanity, and they're called Awakened.

Rex Silverstar is a normal human boy that has a traumatic experience on the day the Supernatural emerges, a Werewolf takes everything he had. He lost his family and his home, he's left all alone in the cruel world. But what drives him to live every day is his deep hatred towards the Supernaturals.

Rex decided to join the military in hopes to help exterminate the Supernatural from his early teens, he found out that it's impossible to kill the Werewolf that killed his parent without being an Awakened.

On a fateful night, In a near-death experience, When his soul was about to be taken by Death. He is given a chance by the full moon where his life will be turned around.

Given the chance to get stronger by a system and has the potential to match the Supernatural, Rex was ecstatic before he saw his stats window on the system.

“I'M NOT A WEREWOLF!!”

“Daily Quest failed, Decrease 20% Sanity Stat”

“Blood Moon will start in ten minutes”

“Sanity stat is too low to control the Blood Moon blessing!”

“Forceful Transformation will begin shortly”

“WHAT?! I'm a human! What transformation?!”

“You're Overwhelmed with Bloodlust!”