Akatsuki Osawa

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Akatsuki Osawa
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Age: 16
Gender: Male
Height: 170cm
Japanese Name: 凰沢 暁月(おうさわ あかつき)
Chinese Name: 凰泽晓月
Korean name: 오사와 아카츠키
Romanized Name: Osawa Akatsuki
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🎙️ Anime Voice Actor

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Nobuhiko Okamoto
Nobuhiko Okamoto
Japanese(Anime、Voice Actor)

🎬 Appearing Anime

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Aesthetica of a Rogue Hero
Aesthetica of a Rogue Hero
Release date: July 6, 2012

Character Setting

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Akatsuki Osawa is the male protagonist of *Aesthetica of a Rogue Hero*, a 16-year-old warrior known as the "Rogue Hero" who saved the other world of Alayzard from the Demon King Garius.

Name: Akatsuki Osawa

Gender: Male

Age: 16

Height: 170 cm

Voice Actor: Nobuhiko Okamoto

Manifested Weapon: Demon Sword Laevateinn

Akatsuki Osawa is celebrated as the hero who saved Alayzard from the invasion of the Demon King Garius.

Despite that achievement, he dislikes being called a hero and instead refers to himself as a "Rogue Hero."

He is bold, carefree, and famous for his shameless behavior around beautiful women.

Even so, he also has a deeply sincere side and remains devoted to the woman he truly loves.

Akatsuki believes that any world that makes women cry is wrong.

Because of that belief, he is willing to do anything to stop a woman's tears, even if his actions often cross into behavior others would call harassment.

In practice, this is rarely treated as a serious issue around him because the women involved are all shown to have feelings for him.

As a fighter, he stands at the very top of humanity in Alayzard.

Akatsuki is a confident and physically powerful young man with a fearless presence.

His attitude is loose and playful, but underneath that is a strong personal code.

He often acts provocatively and teases women without restraint.

Still, he is not shallow by nature, and his loyalty runs deep when it truly matters.

Originally, he was not especially lustful.

That side of him developed largely under the influence of the "Fist Saint," the master who trained him.

Even in his more outrageous moments, Akatsuki is driven by conviction rather than cruelty.

He hates seeing women suffer and tends to throw himself into conflict whenever someone vulnerable is in pain.

At first, Akatsuki was nothing more than an ordinary and powerless young man summoned to the other world of Alayzard by the will of the world itself.

He stayed in the royal castle of the Kingdom of Sherfied as a friend of the hero Leon, Leon's fiancée Princess Listy El Da Sherfied, and their companions Zechs and Rutiere.

Everything changed during Garius's invasion of Sherfied.

When Leon died protecting him, Akatsuki was crushed by his own helplessness.

In response, he went alone to the Divine Realm and mastered the body-control art known as Renkan Keikikou.

He then returned in time to rescue Listy and the others when they were cornered during the operation to retake Eldeia.

After that, he formed a party with Listy and her allies and traveled across the world.

Together they fought the Demon King's forces and also punished villains Akatsuki found intolerable.

In the end, he challenged Demon King Garius alone and succeeded in defeating him.

At that moment, Garius entrusted his daughter, Miu, to Akatsuki.

After the Demon King was defeated, Akatsuki concluded that both his own existence and Miu's presence would bring unnecessary chaos to Alayzard.

A few days after the final battle, he parted ways with Listy and the others and returned to his original world with Miu.

During his departure, he was pursued by 44 beautiful maids directly under Listy's command.

He escaped by using a brutal trick inherited from his master.

Later, he and Miu enrolled in the Japanese branch of the international educational institution known as BABEL.

He entered Class B together with Miu Osawa, but after advancing impressively through ranking battles, he rose to Class A.

When Akatsuki entered BABEL, it was revealed that he was in fact the true hero.

The title "Rogue Hero" had been used by people who did not know the truth behind Leon's death.

The real story is that Leon had become obsessed with the idea of defeating the Demon King and had descended into cruelty.

Akatsuki killed Leon to stop him and to prevent a national collapse and greater tragedy.

To preserve Leon's honor, Akatsuki took the blame upon himself.

That hidden sacrifice is one of the defining truths of his life.

He also consistently upheld a strict form of justice by refusing to kill non-combatants, even among the demon race.

Because of that, very few demons truly hate him.

Akatsuki's signature art is Renkan Keikikou, a body-control technique that circulates a form of energy distinct from ordinary magic power through his body.

This energy can strengthen individual body parts or his entire body.

He can also release refined energy as attacks or wrap it around weapons to enhance them.

Because of the technique's special nature, he can absorb an opponent's energy through battle and gain that opponent's abilities.

During his decisive battle against Kyoya Hikami at BABEL, Akatsuki activated Renkan Keikikou with his full life force at the brink of death.

This allowed him to reach the second stage of power unlocked by crossing into another world twice.

As a result, he gained the ability to transform himself into a thought-based spiritual body.

He also acquired the power to circulate not only the energy inside himself but also energy outside his body.

According to Kyoya Hikami, Renkan Keikikou may possess the potential to "defeat even a god."

It is a power capable of overcoming even the force of a super-higher-order life-form.

Akatsuki is regarded as the strongest human warrior in Alayzard.

His fighting style combines overwhelming physical strength, advanced energy manipulation, adaptability, and ruthless practical skill.

He is especially dangerous in close combat.

His techniques let him overpower enemies directly, absorb their strength, and turn their own power against them.

His manifested weapon is the Demon Sword Laevateinn.

With it, he becomes even more destructive in battle.

Akatsuki possesses a notorious sleight-of-hand skill often called the Brutal Attack.

With it, he can strip or steal women's underwear in an instant without them noticing.

This absurdly precise technique is one of the strangest trademarks attached to him.

It reflects both his shameless personality and the bizarre influence of his training.

During his time working as a guard for a brothel guild, he also learned how to dress women.

As a result, his skill at fitting women's undergarments is said to surpass even that of professionals.

Akatsuki's life is deeply tied to both Alayzard and the modern world.

He carries the burden of past sacrifices while continuing to protect those around him through sheer strength and force of will.

After stopping the Phil incident and preventing Kyoya Hikami's coup, he took another major step.

At the ruins of Babel Tower, the symbolic center of the world structure known as Cocoon, he constructed a massive facility that served as the headquarters of Noah.

He then founded Independent Genesis Organization Noah as a third major power, standing alongside Cocoon and Scarlet Twilight.

Akatsuki became its supreme leader and proudly addressed the members who would remain with him for a long time to come.

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(Last edited time: April 12, 2026, 3:16 p.m.)

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