Reverend Ecstasy - Chapter 13: Farewell Fairies, Welcome Monstergirls

Echoes of the Lost Elf – Back Cover SynopsisA legend long forgotten. A war long past. A magus who vanished into history.A thousand years ago, Historias Everglen, the greatest magician to ever walk the earth, mysteriously disappeared after leading the world to victory in the First War against the Void. The high elf, creator of Castellas Academy, the most prestigious magic institution, faded into myth—his name spoken only in whispers, his fate unknown.But history does not stay buried forever.When a group of young students, lost in the Everglen Forest, stumbles upon an enigmatic figure in the heart of the ancient woods, they unknowingly awaken an echo of the past. Unrecognized, Historias decides to return to his own academy—not as its master, but as a student. Beneath his youthful guise lies an immortal being who has spent a millennium mastering magic, swordsmanship, and alchemy in solitude.As shadows of the Void begin to stir once more, the world stands on the brink of another catastrophe. Enemies rise, secrets unravel, and forgotten legends take their place in the present. But one question lingers:Will the world recognize its lost protector before it’s too late?

Thirty years ago, a meteor fell and the divine ruins appeared! Some deities emerged from it, feeding on humans. Since that day, humans have become food for the deities, except for me!Because I feed on the deities.

Chi Zhao binds with the slag shou system, and if he succeeds in his missions, he will be rewarded.

But who said life is easy!

A rich old man who was slagged by him: “I know you love me. Your past pains, I’ve already investigated them.”

The star admiral who had been slagged by him: “Don’t be reluctant anymore! I’ve always known that you didn’t betray me.”

The entertainment mogul who was slagged by him: “Don’t make any noise. Honey, will you come home with me?”

The dark sentinel who was slagged by him: “Now, do you still want to say that it is not my child?”

The prince regent who was slagged by him said, “The mountains and rivers are yours, but you are mine.”

…

Chi Zhao burst into tears: “Boss, believe me just this once. Let me get the reward, okay?”

Thinking that the acting is very good, in fact, every day he’s spreading meng.

- Description from Novelupdates

Being able to see into people's past has no real appeal for the teenager this story is about, letting him use it only as amusement and to show off when he was drunk.Never watch into someone's past beyond a superficial level.Never try to find out more than you should.NEVER. EVER. LOOK. INTO. THE. FUTURE.But everything changed the moment he was forced to look into the future, was forced to investigate a murder, and was forced to make the acquaintance of the victim's twin brother('s fists).The more time passed, the more it appeared that the primary reason for this murder wasn't a local problem, but a global one.This single, marred corpse was the beginning of a threat that would shake the world.(MC looses a screw when he enters the prison)BL, first-person view; MC is shuo (perhaps even a reversible couple); love interest falls in love first; both MC and ML are straight, mutual bending, Enemies to Lovers