Goddess

The Goddess or Venus is the goddess that reincarnated Lugh Tuatha Dé into different world to have him kill the hero.

Appearance
The Goddess is pure white woman with white skin, eyes and clothes. She wears a chainlet on her hair with white flowers and a crystal on her forehead. She also wears multiple gold rings and bracelets. Depending on the occupations of the previous souls, the Goddress has wore numerous outfits based on them.

Personality
The Goddess appear to have a cunning personality, but aside from that nothing much is known about her. She is neither an ally of demons or humans. She only cares about the world itself and doesn’t care about what the reincarnated soul does to achieve their goal, giving them full autonomy. However, because she gave them unmonitored independence, it only left her in immense disappointment whenever her subjects fail.

The manga shows her to be unused to making facial expressions; having seen her reflection and noticed she still had a kind smile on. The stairs leading to her observation/manipulation chamber is littered with junk food barely finished; suggesting Venus is actually a lot sloppier than she claims to be.

Background
The Goddess welcomes the soul of the greatest assassin. She offers him to be bleached and reincarnated like he would normally do, or to be reincarnated in a different world with his memories intact. The man quickly realizes she wants him to kill someone and she reveals its the hero of that world. The Goddess explains that he will defeat the Demon King in sixteen years, but two years later he will use his power for selfish desires and send the world into chaos. She explains that a simple human couldn't kill him as the hero is special and how the skills, the magic and the world works. She then lets him choose his own skills, which she finds boring, but also interesting as if he had chosen skills anyone else would have chosen, he wouldn't stand a chance. When everything is ready, she reincarnates him as Lugh Tuatha Dé.

History
So far, the Goddess hasn't appeared often in the story after reincarnating Lugh in this new world with the aim of preventing the destruction of the world by the hero. Nonetheless, that doesn't stop her from observing what is going on and acting from time to time, such as appearing in a dream to Tarte when she was young or communicating with Lugh and the bishop and highest ranking priestess of the country, Aram Karla.

Abilities
The goddess has many powers, being responsible for this world. She has the power to welcome souls, to bleach and reincarnate them in her world while being able to leave them their memories intact or not. As seen with Lugh, she also possesses the power to bestow them unique skills and communicate directly with them once reincarnated in the New World.

Relationships
Lugh Tuatha Dé She is responsible for reincarnating him. After he kills Setanta Macness, she becomes happy that he'll be the one to kill the hero.

Trivia

 * The Goddess reports to a 'higher existence' and designates herself as World Preservation Administrator No. 3800.
 * Although it hasn't been mentioned yet, in the Anime OP, in the end, there was a scene where Lugh points his gun at the goddess, there was also several scenes in the manga where the goddess does some suspicious activities such as saying "start plan b" which might indicate that she will abandon Lugh for an unknown reason.
 * She is called by the name "Venus".
 * Since she is not ally for both Hero and Demon, she is likely represent her status as a god to maintain balance for her world as she have no desire to destroy both side unless one side push too far, the main reason to hired a reincarnated army/mercenary from the dead to killed the Brave such as Lugh and countless men and possible women came from military background.
 * As she hired many men and possible women from military background to fight the brave in Promise Day, most of them are ended up slacking their abilities and their life judging by the crystal of future time much to her disappointment and dismay until she saw Lugh potential after she reincarnated him to the Tuatha Dé noble family, so she decided to manipulated every character in her world to have a fate meeting with Lugh such as Tarte and Maha for the Promise Day.
 * Before, while and after Lugh's resurrection, the goddess has also experimented with other resurrections to further her goals to save the world. Multiple resurrections with assorted abilities and masteries were tasked to target the worlds hero, with varying results.