Flare Arlgrande Jioral

Freia, real name Freya Arlgrande Jioral, is the Technical Hero and the main heroine. She is the princess of the Jioral Kingdom and is now currently Keyaruga's companion and slave.

Summary
Freya originally found Keyaru in his village and took him back to the capital to train him as a hero after identifying him as one. However, once she found out Keyaru's status as a Healer Hero, Freya started to abuse him and treat him as a slave, feeding him a drug to make him submissive.

The abusive treatment would not last however, as Keyaru has travelled back from the future and has taken countermeasures to deal with the drug she feeds him. Eventually, Keyaru escaped from his imprisonment and managed to capture Freya.

After raping and torturing her, Keyaru performed his 'Upgrade' skill on her to slightly modify her appearance and erase her memories. With this, the former princess Freya was gone.

After she woke up, Keyaru convinced her that she was his over and slave. He told her that her name is Freia and introduces himself as Keyaruga. He then proceeds to engage in sexual intercourse, which she submissively accepts. Afterwards, she joins him as his follower and the magician hero.

According to Keyaru, he will eventually revert Freya to her normal self so that she can be disgusted at having served him for so long. However, as of present, he has not carried on with this promise.

Pre-Memory Loss
On the outside, Freya appears to be a kind, graceful and honest woman. She is able to become very popular due to her charms and beauty. In reality, Freya is unbelievably self-centered and thinks of herself as superior to everyone, especially to Keyaru, a mere farmer and a Hero with no offensive capabilities. Her priorities are rather skewed, as when Norn presents her with the gift of a demon city that she has taken by slaughtering all the populace, Freya only cares about how she can take baths every day while in enemy territory. Because Keyaru is a simple "peasant", she sees him as no more than a tool only useful for carrying the group's equipment, serving as a whipping boy, increasing the level cap of her servants and on occasion casting Heal.

Incredibly sadistic, she tortured Keyaru at every turn, beat him regularly and forced him to do tricks like a dog in order to get the drug she got him addicted to. However, Freya is also cowardly, as she begged Keyaru for forgiveness after the latter manages to ambush her.

Although manipulative enough to be able to conceal her true nature from the people of the Kingdom, she is ultimately portrayed as a rather clueless person, her own sister considering her useful solely as a weapon of mass destruction. When she sees Keyaru faint after healing Kureha, she immediately dismisses him as completely useless, and has to be told by her court mage that he has in fact performed some very high-level magic. Her arrogance ison full display once Keyaru strikes back against her, as even when she is completely at his mercy, she still behaves herself arrogantly towards him and insults him for being low-born, which understandably only infuriates the Healer Hero even further.

Post-Memory Loss
After being brainwashed, Freia is now completely loyal to Keyaruga and genuinely in love with him. Freia actively engages in sexual intercourse with him, claiming that it is rather enjoyable. She is also much more kinder than her former self, as she treats Setsuna as a friend in spite of how her nation abuses demi-humans.

Ironically, she now displays a strong sense of justice and will be the first to claim that they have to save people whenever the Jhoiral Kingdom's forces abuse innocents. This amuses Keyaru to no end, as he knows what kind of person she used to be before this and feels like it's hypocritical for Freia to hold such views.

Becoming an amnesiac has made Freia more naive than before. Keyaru even has to teach her how to use her spells properly, since even though she retained her knowledge on how to cast them, all of her experience with their use disappeared along with her memories.

Despite her amnesia, Freia still harbors some traits of her former personality, such as her talent in manipulation and lying. Additionally, Freia is able to impersonate her former self flawlessly.

Powers
 Elemental Magic:  As the Magic Hero, Freya specializes in casting devastating offensive magic, particularly area of effect spells that can decimate an entire army. At the beginning of the series, she is seen casting magic of the seventh tier. As Freia, she seems to be able to go only up to the fifth tier, but this is likely because she is lower level than she was in the prologue rather than because of her memory loss.

Freya is able to cast formidable magic affiliated with various elements, including lightning, fire, ice and wind. A normal mage can only master one or two elements, but as a Hero, Freya is capable of using every single element and combine several spells to devastating effect. Unfortunately, as Freia, her memory loss causes her to lose her combat experience with her spells. One of her favorite techniques, as taught to her by Keyaru, is combining ice projectiles with a burst of wind to increase their range.

Etymology
Her name and fake name Frea (フレア) and Freia (フレイア) alluded to the offensive magics Flare (フレア) and Flareja (フレアジャ) from the Final Fantasy series. Her name is also identical to that of Freya, a goddess in Norse mythology associated, among other things, with love, sex, lust, beauty, sorcery, war and death, all domains that are very applicable to Freya here. Feeding into this, one of her most powerful spells is named Mjollnir, after a mythical weapon in Norse mythology.