Stylish_Demon

"I am an evil god. Would you like to make a contract?"

In "Phantom Heroes Online," a VRMMO where in-game currency can be converted to real money, a man, worn out by society, decides to quit his job and earn a living through gaming. 

In this fantasy world of swords and magic, players contract with advanced AI NPCs, aiding and nurturing them.

The protagonist, Zephyr, whimsically tells a young girl a lie, claiming to be her savior. Believing Zephyr to be the "god who rescued her from despair," the yandere girl transforms into the formidable "Reaper Loli," a top-tier berserker feared as the "Fanatic" across the continent. 

She rises to become one of the game's top players, dominating the leaderboards.

Unbeknownst to Zephyr and the other players, their actions in the game are actually leading to saving of another world.

VRMMO: My first Contractee is Yandere

The little girl appeared suddenly.

Her face was disturbingly beautiful. White hair and red eyes that evoked a sense of foreboding. Her presence was so overwhelming that I, the strongest person in the village, couldn't move.

Her eerie, unfocused eyes seemed to disregard the entire world...

What was that glowing halo above her head?

What were those strange wings? Why were there so many of them? The giant scythe on her back—was that really a weapon? Could such a young girl actually wield it?

She was beautiful, terrifying, unnatural… and unsettling.

That was the kind of girl she was.

The girl kept touching the black mist swirling around her and muttering "God…" It was unsettling, like watching a possessed child.

I had been tasked with guiding this girl.

The creepy little girl