Ultimately, Boji’s mother, Sheena, died protecting him from Miranjo, who is the main antagonist in Ranking of Kings (Ousama Ranking). Miranjo had previously walked with King Bosse, even before he met Sheena. Miranjo’s ultimate goal was to make Bosse the strongest and resurrect him in Daida’s body, making him a vessel for Bosse. To achieve this, she planned to kill off Sheena so Bosse could marry another woman and create an offspring – Daida – since Sheena, being a giant, could only bear one child. However, Miranjo’s plan did not go as she had hoped.

Sheena and Bosse’s Backstory
Sheena makes her first appearance in episode 8 of season 1. At that time, she engaged in a battle with a powerful ogre. Bosse and Miranjo were also present, and Bosse approached Sheena, recognizing her as the strongest woman on earth, and asked if he could speak with her.
Bosse was direct in his proposal to Sheena, asking her to marry him and bear his child. Sheena blushed and rejected him, saying that she only lived to pursue strength. They then engaged in a battle when Bosse declared that he wanted to be the strongest man in the world. The battle was intense and even caused trees to shake, but eventually, the two seemed to be equally matched. They ended the fight with a conversation about strength and appeared to get along well.
Soon after, Bosse and Sheena became a couple and had a child together. Sheena proudly showed Bosse their baby, Boji, who was small and adorable. She wondered why their son, born to two giants, was so tiny, but she still felt immense joy at his arrival. Sheena kissed Boji’s cheeks and smiled with happiness.

King Bosse’s Relationship With Miranjo
In Ranking of Kings, the character Bebin asks King Bosse (who is currently in the body of Daida) about the voice in the mirror and his true intentions in episode 18. King Bosse reveals that the voice in the mirror belongs to Miranjo and reveals that he holds her in the highest regard. He explains that Miranjo is like a child to him, a mother figure, and a trusted mentor all rolled into one.
When he was young, Bosse traveled the world to become a stronger warrior. One day, he went to the Houma kingdom with the aim of challenging their mages to a battle. The people of Houma possess the ability to learn magic, which is typically only attainable by the gods. They are the first nation to rebel against the gods and their oppression of humanity. During that era, the gods had dominion over mankind and enslaved one nation after another. The people of Houma were the first to recognize their subjugation and rose up in revolt against their divine oppressors.
While staying in that land, Bosse encountered Miranjo and her father. He first met her father, a highly skilled wizard, and agreed to fight him in a deadly battle. Bosse emerged victorious, but not without sustaining life-threatening injuries. Miranjo’s mother intervened and saved his life even though he has killed her husband. When he asked her why she helped him, she simply replied that it was her nature to be kind, even to strangers. Despite the general kindness of the people in Houma, Miranjo’s mother’s heart was too tender for her own good.

Bosse chose to remain in Houma and witness Miranjo’s growth. She was exceptionally talented in magic and, like her mother, exuded kindness wherever she went. Miranjo’s mother advised her daughter that to attain genuine happiness, she must work toward the happiness of others. Miranjo simply replied with a nonchalant “Kay!”
But as for the conflict between Houma and the gods, it only intensified, prompting Bosse to fight on Houma’s side. The army of Houma won many battles, but they were aware that a single defeat could lead to their downfall, given the high stakes of challenging the gods. As the struggle continued, Houma sought an alliance with the Gyakuza kingdom. However, despite their shared goal, their cultural differences stemming from their distinct histories made cooperation difficult. Ultimately, the differing values of the Gyakuza and Houma placed them in opposition to one another.
However, Miranjo’s mother never comprehended the differences between the two countries until it was too late. Outsiders frequently subjugated Gyakuza and had only ever dominated it. As a result, the people of Gyakuza learned to survive through deception and subtlety. They did not consider this behavior as wrong, but instead, saw it as a way of life. This became their custom and they became known for their callousness.

During their stay at the Gyakuza kingdom of Miranjo and her mother, through their vast knowledge of magic, were able to transform Gyakuza into a thriving nation. Despite this, the people of Gyakuza did not regard kindness and empathy as virtues but rather despised them as weaknesses.
Despite being aware of the people of Gyakuza’s tendency to exploit her mother’s kindness, she still held out hope that she could change their ways. The Gyakuza kingdom became prosperous quickly, but they did not feel any obligation to repay the generosity of Houma. They also gained a reputation for breaking alliances and abandoning their allies when the tides turned against them. In victory, they displayed disturbing cruelty and indulged in their darkest impulses. Eventually, history would blame Houma for the atrocities committed by the Gyakuza kingdom, despite their own kindness and efforts to reform their country.
Going back to the battle against the gods, the gods continued to amass power, the war effort slowly drained Houma of its resources, and eventually, Miranjo’s mother was cruelly stabbed by the people of Gyakuza, who were motivated by their greed for money. In her final moments, Miranjo’s mother cried out for her daughter.

When the tide of the war began to turn against them, the people of Gyakuza betrayed Houma and sided with the gods and when Bosse saw Miranjo, he found her lying on the ground with a battered body, chained to a metal log. Naturally, Bosse became enraged and demanded to know who could have committed such a heinous act. In his fury, he crushed those responsible with his own hands.
With the blood of those who harmed Miranjo on his hands, Bosse carried her to a nearby wizard for healing. After she was healed, Bosse decided to stay by Miranjo’s side forever. However, even after her recovery, Miranjo never smiled again.
In episode 22, Miranjo is shown to have committed suicide but was rescued by King Bosse. From that point on, the two become inseparable, going on adventures and growing closer to each other. Miranjo’s smile returns, and she begins to share Bosse’s dream of becoming the strongest.
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Sheena’s Death
In episode 16, Boji recalls the name “Miranjo,” which triggers a memory of his mother protecting him as he cries. Giant arrows pierce Sheena’s back as she begs Miranjo to spare Boji’s life. Despite Sheena’s pleas, Miranjo signals a group of ogres to rain down more arrows. As Sheena lies dying, she speaks to Boji:
Boji, here, stay safe under Mommy. I won’t let them hurt you.
Sheena smiles through the pain as more arrows rain down upon her, causing her condition to worsen. She thinks to herself, “Boji, you must live!” and begins to cry. Boji as well as he watches a pool of blood form around his mother’s body.
In the end, Miranjo was also betrayed and shot down by an arrow. As Boji recalls these memories, he begins to tear up.

Sheena in the Afterlife
In episode 19, Miranjo is standing in front of her mother and Sheena’s souls in the afterlife. Sheena is standing with her arms crossed, while Miranjo’s mother appears concerned. Upon seeing them, Miranjo just gives them an angry look.
Miranjo’s mother calls out to her, while Sheena clenches her knuckles, still angry for being killed by Miranjo. The two engage in conversation, with Miranjo’s mother asking why Miranjo would do what she did, but receiving no response. Sheena deduces that Miranjo cannot cross over to the afterlife, even if she wanted to.
It is disclosed that, at the moment of her impending death, Miranjo refused to pass away until the red demon looked upon her and began chanting to transfer her soul into the mirror. While bleeding from her wounds, Miranjo held on to life until the demon performed the ritual to preserve her spirit.

Returning to Miranjo in the afterlife, Sheena sympathizes with her, remarking on how pitiful it was for her to choose the path that she did. Sheena then declares that she no longer holds any resentment towards Miranjo after hearing her story. While she condemns evil actions, she doesn’t hold contempt for those who commit them. She goes on to mention how Boji grew up to be strong, and how even Miranjo was unable to kill him. She notes that there are many individuals who would go to great lengths to protect Boji with their lives, unlike Miranjo.
Miranjo’s mother attempted to talk her out of her plan, but Miranjo refused to listen. Instead of giving up, she cried out that she would emerge victorious and reunite with King Bosse. She cast a spell and returned to the world of the living.

Miranjo’s Plan Revealed
In episode 21, King Bosse and Miranjo have a conversation in which Miranjo admits to having done things that cannot be undone. While the love and life they shared would have been enough, a giantess can only bear one child and King Bosse’s life is nearing its end, she explained. Miranjo cannot let him pass without having another child.
While King Bosse was away, Miranjo called upon a nation to attack the castle, using King Boji as bait. In the chaos, she killed Queen Sheena and set the stage for Daida to be born as a vessel for King Bosse’s resurrection.
Revealing that all in all, Miranjo helped Bosse to achieve his dream by convincing him to have a child who would be sacrificed to make Bosse powerful. However, Bosse regrets his decision and decides to devote himself to the kingdom. When Bosse was near death, Miranjo resurrects him using another sacrifice made of Bosse’s blood and flesh. To do this, she has Boji’s mother killed and persuades Bosse to marry again and have another child. Miranjo is unaware that Bosse had accepted death and didn’t want to be resurrected. Eventually, Miranjo realizes the selfishness of her actions and gives up, accepting being devoured by the devil.