Empress

Empress (エンプレス Enpuresu) is a major character and boss in Lust Friend. She is the queen of the succubi and is controlling Fess for most of the game. She is also responsible for summoning Magrut to the succubus world.

Appearance
Empress has long blonde hair, red eyes and large breasts. She has curly red horns and red wings. Unlike most succubi, who only have a single tail, Empress has three purple tails. She wears a dress with a cleavage-bearing black top and a skirt that is white with red trim. On her head, she wears a tiara of the same colour as her horns. She also wears elbow-length gloves, stockings and high-heeled shoes, all black.

Personality
Empress is dedicated to serving her people. She goes to extreme lengths to help the succubi survive a future disaster, even wearing down her own body through overuse of her power. She is prepared to do anything to help the succubi, including killing Magrut and absorbing the human world into the succubus world. However, she does feel regret for having to take such ruthless measures. Additionally, she is not completely inflexible, as Magrut and Fess can convince her to try other options.

Background
Empress was born with a rare ability: she could turn back time, at the expense of her own life force.

At one point, there was a powerful succubus called "Demon". She killed many other succubi and was a threat to the entire succubus world. After many years of struggling, Empress gathered many allies and managed to defeat Demon. However, they were only able to seal her into a weakened form, that of a fairy.

Later, the succubus world faced another threat: an unknown but immense power covered the entire world, and every succubus died in an agonising manner. Empress rewound time repeatedly, trying various methods to prevent this disaster, but never succeeded. She eventually came up with a plan to absorb the human world into the succubus world, which would make all the men food for succubi and transform the women into succubi, increasing the succubus world's power so it could withstand any disaster. Summoning so many humans would require an immense amount of power, but Empress discovered certain materials which could be used to amplify her power. As another component of this plan, she constructed Fess Tower. Even this was not enough: as a vessel for the materials, she would need the body of someone who'd interacted with many succubi. For this purpose, she chose Magrut.

Lust Friend
Empress then takes control of the succubus Fess (who had a history with Magrut, and hence would be useful for interacting with him) and proceeds to summon Magrut. She tells Magrut that she will send him back after he gathers materials for her to build Fess Tower (in truth, the materials are for amplifying her own power). She also has her subordinate Shandilla act as an enemy towards Magrut.

After Magrut gathers the materials and defeats Shandilla, Empress reveals herself. She explains her plan to Magrut and then takes his body, forcibly closing the game.

When the player attempts to reload their save, this results in what appears to be a new game with the Empress-controlled Fess summoning Magrut again. However, Empress soon realises that Magrut remembers the previous events. She's confused as to why time has been rewound (not knowing about Lust Nightmare, another succubus with power over time) and concludes that she herself was the one who'd rewound time. She then shows Magrut a ruined Fess Town as an example of the eventual destruction of the succubus world. Finally, she leaves, releasing her control over Fess.

Magrut eventually returns to challenge Empress again. There are two diverging paths, depending on whether he chooses to defeat her or befriend her.

If Empress is fought and defeated, Fess tells her that she doesn't have to do this alone and that they can work together to stop the future destruction. Suddenly, they sense the same kind of magic as in the bad future. Fess decides to send Magrut back to his world. In this path, the succubus world is destroyed.

If Empress is befriended, the events play out similarly to if she's fought, with Fess attempting to send Magrut back to his world. However, Magrut is instead taken away by Mea and manages to befriend her, then is returned. This leads to the succubus world being saved.