Loser Got Isekai'd - Gotta Conquer the Girls Before Conquering the World

Year 2055. Tokyo.
Wars, resource depletion, and population decline.
In this place filled with despair, the bright girls perform live streams. Being evaluated and ranked in this world, their eyes become increasingly clouded.
In this colorless, dark world, a girl awakens.

“HELLO WORLD! I am Ai from Vstar!”

The girl continues to sing until the world ends, shining in the despair.
 

In a world plagued by the Demon Lord’s shadow, your village is destroyed, and your little sister is cursed. Fueled by a desire to rebuild what was lost and protect those you care about, you embark on a journey with your childhood friends and a determined guild leader. Together, you’ll face dangerous foes, forge deep bonds, and uncover the truth behind the darkness threatening your world.

In a world plagued by the Demon Lord’s shadow, your village is destroyed, and your little sister is cursed. Fueled by a desire to rebuild what was lost and protect those you care about, you embark on a journey with your childhood friends and a determined guild leader. Together, you’ll face dangerous foes, forge deep bonds, and uncover the truth behind the darkness threatening your world.

In a distant kingdom ruled by ambition and fire, an aging monarch dreams of expanding his legacy. Obsessed with conquest, he sends his sons to subjugate the neighboring provinces — once peaceful lands now protected by a mysterious and fiercely resistant coven of witches.
 
But fate has no loyalty to bloodlines.
 
During one of these brutal campaigns, the king’s eldest son — his pride, his heir — falls in battle, slain by arcane forces that no sword can match. Grief soon turns to rage. And rage calls for vengeance.
 
Desperate to strike back, the king seeks out a warlock long banished from the royal court. The warlock offers help — but not the kind the king expects. Through a dark and forbidden ritual, he raises the fallen prince from the grave… not as a man, but as something else. Something hungry. Twisted. Unnatural.
 
Now, a creature of lust and undeath walks the earth once more, driven by a primal desire to defile and destroy the witches who ended his life — one coven at a time.
 
This is a tale of power, corruption, forbidden resurrection… and the sinful magic that binds them all.

Our protagonist is a dull, 30-year-old virgin amateur.
He spends his days surfing the web and envying those who achieve success through news articles.
Suddenly, he is transported to a mysterious page and is enveloped in light...

He opens his eyes and finds himself in a place resembling an izakaya, bustling with people in old-fashioned Western clothing.

After speaking with the receptionist, he discovers he has been transported to a fantasy world where monsters roam.

To make matters worse, the protagonist has been granted the ability to cheat others, allowing him to control them at will.

Using his cheat powers, he successfully forces himself into a hero's party full of beautiful women.

He then hatches a plan to ruin the lives of these beautiful women...