Mirellia Q Melromarc/Relationships

Naofumi Iwatani
The Queen understands the fact that Naofumi is innocent of the crimes her husband and oldest daughter have framed him for, and subtly acts to help him before her actual appearance in the story. She sees the real value of Naofumi and wrote to her husband to take special care to gain his favor which her husband didn't. She orchestrated his purchasing of a slave, though likely did not expect him to buy Raphtalia specifically, and concealed his less savory, but necessary given his situation, actions. She finally came to his defense and even saved his life when the Three Heroes Cult made their move. Placing her youngest daughter Melty under his care was also a part of her plans, although the Shadows would've stepped in if Naofumi himself proved a threat to Melty.

Naofumi had a thought of leaving the country for which she begged him by bowing to his feet, to stop him from leaving. She has signed a contract with Naofumi preventing her from betraying him (with the fatal implications of a full-strength Slave contract), to show her sincerity to the distrusting hero. She is not fully tolerant of him, however, as she subtly threatened him when he wanted to have her husband and oldest daughter executed for their crimes against him, although he himself later concluded that, given his worth to her, she'd have been forced to comply if he truly pushed that demand, making this an empty threat.

She values him as the shield hero for political reasons, as he has the best means to keep the Demi-Human countries from attacking them, and is even biding for her youngest daughter Melty to marry him, or at least become pregnant from him, both in simple bids to placate the Demi-Humans who worship him. During the Spirit Tortoise incident, Naofumi became the only hero she could actually rely on, as the Seven Star Heroes were miles away and the other three Legendary Heroes being MIA. During this time Naofumi proved capable of shocking even her with his ability to act out a heroic speech, motivating the men of their alliance, and was ultimately promoted to Count for his actions by her, as well as given the land he requested to help train his forces for the next wave.

She and Naofumi have something of an understanding it seems as she provides him with what he needs to combat the wave and he does not take advantage of this position or abuse it in any visible way. The two have a fair grasp of each other's personalities, and she basically treats him as an equal ally, as well as constantly pressuring him to either become her son in law or at the very least the father of her grandchild. Also, she shares Naofumi's twisted sense of humor too.

Ren Amaki, Motoyasu Kitamura, and Itsuki Kawasumi
Even before she arrived to Melromarc, she gathered a lot of information about the individual heroes through her shadows. She also comes to know of their poorly thought out action, its consequences, and also them being easily manipulated by the Church of the Three Heroes and Malty. She saved the heroes from the assassination plot of the pope in the nick of time. She also argued with Naofumi that the action of the other heroes is not of malice but because of the false information given to them by the guild, as anyone tends to believe the one with authority. When the queen forced them to train, this angered them for they are not having their way as before, so they raised weapons against the queen. Leaving no other option the queen agreed to let them leave the country if they fulfill two conditions of fighting the waves and to solve strange problems occurring, the familiar of spirit tortoise.

As compared to Naofumi, who has caused some minor amount of trouble, Mirellia shows evident stress with how the other three of the Four Sage Heroes were initially shown to be very unreliable because of the trouble they keep creating. After the Spirit Tortoise incident, people had begun the belief that the heroes, other than the Shield, were false heroes. Thus, most of the countries, besides Melromarc, had decided to place restrictions on the movements of the heroes whereas Mirellia still ready to give them support, by making Melromarc the only country that would accept them while also making the attempt to have rumors die down.

Aultcray Melromarc XXXII
She admits in how there was a time when Aultcray had won her heart in the past and she fell in love with him like a woman. She is very much ashamed of what he's become, stating he was amazing before they had a daughter, Malty, whom he spoiled rotten. He was called the Wise King by many, herself included, in the past, but in the present, his actions are so petty, tyrannical and reckless, easily manipulated, in short, plain stupid, that she actually had to give authority of her country to someone beneath him during her absence.

However, because of the large mess Aultcray made, She was forced to make many diplomatic sacrifices and was enraged at him. This series of almost immediate and unbelievably stupid actions put their kingdom into a political minefield which she had to spend the next two or so months cleaning up after. Once she finally had the chance to return home she stripped her husband and daughter of their royal status and power. After convincing Naofumi to spare her husband and daughter in exchange for any other punishment but death, she willingly has their names changed to Trash and Bitch respectively. This is comparatively lesser punishment or in her case giving out a punishment where he wanted to be executed for his doing and thus shows her care for him.

However, but their relation is somewhat of a sadistic, as every time Naofumi comes back to the castle following this event, Trash is in some other ridiculous situation likely for his refusal to correct his behavior, such as parading the castle town half-naked or wearing a collar around his neck which renders him utterly silent.

Mirellia became very reasonable with him later since, as Aultcray had met his niece for the first time, and understood that her husband was starting to behave. She believed in him, even-though he showed less wisdom than his past self.

In her dying breath, she left all in his hands and hoped the wise king will save the world. though he himself was hopless, she had utmost trust in him.

Malty S Melromarc
Her relationship with her oldest daughter is, to say the least, marginal to hostile. Mirellia acted more of a queen than mother, but show her motherly care underneath. Mirellia noticed all of the Malty's horrible personality of making others to suffer and took it upon herself to correct it. She once sent Malty to a high school abroad, hoping to reform her bad behavior, but all that accomplished was Malty being promoted from a virgin. Mirellia tried to correct her daughter in many other ways but failed only making her worst and worst. Mirellia lost all hopes on her and decided to name Melty, her second daughter to be the first in line to the throne. Mirellia blames Malty for turning her husband into an idiot, as she notes that Aultcray was "Magnificent, before we had a child," and noting that Aultcray spoiled her rotten.

Malty is much like her mother in the worst possible way, she inherited all of her mother's cunning talents but chooses to use them to manipulate and have her own way. During her trips to a foreign nation, Mirellia continues to hear from the shadows of all the wrongdoings of Malty including framing Naofumi for rape and nearly inciting war with the kingdoms who worship the Shield hero. Malty also took money from the kingdom's treasury for her own personal use. Mirellia constantly burned statues and portraits of both her husband and Malty, to subsume her anger. Malty crossed a personal line by trying to get her younger sister Melty killed.

After Mirellia's return, she clears Naofumi's name and stripped Malty of her right to the throne completely. She did show some compassion or motherly love by preventing Naofumi from demanding to have Malty executed, but she did offer Naofumi the idea of giving her a punishment where she wanted to be executed though. But instead placated his justified anger by having Malty and Aultcray renamed to Bitch and Trash respectively. After this Mirellia made her daughter a slave to their kingdom and forced her to pay off the frankly tremendous financial debt she owes (all of which was spent on her personal luxuries). She promises to lessen her burden if she was willing to fight the Waves with the heroes. Though Malty's crimes were severe, her punishment was comparatively less which showed Mirellia's motherly side. Mirellia did show concerns for her daughter, after learning that Malty went with Motoyasu to defeat the spirit tortoise.

Malty still refused to learn her lesson and betrayed all four of the heroes one by one. After Malty teamed up with Mald, the Revolutionary faction, & the remnants of the Church of Three heroes in a failed coup d'état against her, Mirellia finally had enough of her eldest daughter actions and decided to marry her off to the king of Faubley in exchange for peace.

Melty Q Melromarc
The Queen is much more caring towards her youngest daughter Melty when compared to her oldest daughter Malty, though she's not above manipulating her as a political tool; such as using her as a lure to bring out the Three Heroes Cult (although Shadows were always closely guarding her), and later even constantly encouraging Naofumi to marry and/or impregnate Melty. Her encouraging Naofumi to marry her daughter also seems partly done out of a desire to help her daughter, who is visibly attracted to Naofumi.

Melty spent a larger amount of time with her mother than her father, and as such doesn't appear to have become rotten like Malty. Also, they have a common love for filolials.

Shadows
She uses the Shadows as her personal assassins, enforcers, messengers, and espionage.

Seaetto
Seaetto is the Queen's right-hand man and is in charge of the Demi-Human protected village. She entrusted him with the authority in times of her diplomatic travels.

Van Reichnott
Van is one of the nobles who shared the same ideal of the queen and was promoted lordship to watch-over the demi-humans

Eclair Seaetto
Eclair is the daughter of Mirellia's right-hand man and entrusted with the training of the heroes.

King Faubrey
Mirellia is the sister-in-law to the current king of Faubrey due to him being her husband's older brother by 13 years. Although their exact relationship despite being in-laws is unknown, it has been stated that Mirellia has had contact with him as fellow Monarchs during diplomatic talks between their two nations and has had a purely business relationship with him, albeit it has been implied that it is a tumulus one due to the King's misogynic view on women and Mirella herself despising him and finding him disgusting due to his "passions".

During her youth, Mirellia, like many women and girls of noble birth, was already aware of the King's nature and feared the possibility of being married off to him by her own parents for the sake of protecting their homeland.

Due to her eldest daughter and husbands actions of going against the international agreement regarding the summoning of the Four Heroes, Mirellia herself had to make a extended diplomatic trip around the world to prevent the escalation of conflict between her home nation and other countries due to their actions. Mirellia in particular had a difficult time negotiating with the King and Faubley due to them feeling the must wronged due to them suppose to be first in the summoning order of the Heroes and eventually had to resort to making a peace agreement where she agreed to marry off her eldest daughter to the King if she failed to assist the heroes fighting off the waves.