Dark Lord Leona

In Free City, a famous red-light district full of brothels with a variety of races attracts both locals and foreigners.

Suddenly, due to the opening of a competing brothel that provides new and innovative sexual services, the old brothels find themselves nearly out of business. The new brothel is run by reincarnators and the red-light district must find a way to survive its competition.

The goal of the game is to unify all the brothels and manage a better business than the competing reincarnator's brothel with cheat-like otherworld knowledge.

Driven by hidden instincts, the protagonist and his schoolmate enter a pact with a group of powerful Succubers, roaming the streets to gather energy. Will they fulfill their contract and achieve their ultimate dreams?

One day, Tachio, an ordinary office worker, is suddenly transported to another world overrun with dark monsters known as Yamimon.
In this strange world, he is attacked by Yamimon, but is saved by the beautiful dark hunter Kurenai, with striking red hair and large breasts.
However, the moment he comes into contact with Kurenai,
he fuses with her special battle suit, Gear.
Thus, Tachio fights alongside her as her suit during battles,
while searching for a way to return to his original world (while being made to take care of everyday things at home).

Our story starts when peace has finally taken hold of the world after the war. The former mercenary and dark elf Fornelia, battle-worn and looking for a place to die, saves a young man named Ruse from a monster attack.

Bounty hunter Tifania visited a remote village to investigate the disappearance of local girls.
There are rumors about the incident related to local wicked activities.
There, crazy villagers and mysterious creatures aiming at Tifania attack one after another.