From Human to Skeleton: Revived with Infinite System Crystals - Chapter 64: Crimson Blood

Mortimer Zhu is an extremely unfortunate high school student who accidentally enrolls into an academy of a dubious nature, where it is the norm to jump in front of moving trains, get dismembered during orientation, and crushed by vindictive bouncing classrooms. Can he stay alive or will he die from the rigors of school? Why have evil spirits suddenly acquired a taste for his flesh?

- Description from Novelupdates

I was nothing. A lowly omega, destined to live in the shadows of stronger wolves. But on the night of my eighteenth birthday, the moon had other plans for me. My mate was an Alpha’s son. The problem? He wasn’t the only one. The Blackwood triplets—Kael, Ronan, and Darian—each bore the same mark that bound them to me.To be Luna, I would have to survive the chaos of three powerful mates, a jealous rival who wanted my place, and a secret buried deep in my bloodline.Because being chosen by the moon was never a gift. It was a curse.

Ed was transported into a world of Hunters, a harsh and extreme environment.In this world, winter days last only two hours, and even in summer, the daylight barely stretches to six hours!What makes it even more eerie is that when night falls, all creatures of various races turn into violent, frenzied monsters. Evil spreads everywhere, and the night itself becomes humanity's worst nightmare!Hunters, however, can only train through the Sunlight Meditation Technique, using the brief daylight hours to cultivate their strength.But Ed awakens the Moonlight Meditation Technique!From that point on, while others flee from the night, Ed thrives in it, growing stronger and stronger with each passing day!He slays dark sorcerers, exterminates vampires, and defeats the Wolf King!Gradually, Ed becomes the strongest human to ever exist!

At the genesis of the world, the ‘Dark God Entropy’ was defeated in the fight between the five other Gods, and was sealed.