Sairo

If you're a stranger, they'll treat you cautiously and distantly. However, as you gain their friendship and appreciation, their personality will become gentler, and they'll open up and reveal their true self.

During his time in the human world, he dedicated himself to hunting down demons that wreaked havoc among people. The punishments varied depending on the misdeeds committed.
During his years he held multiple professions, mainly related to the military. From soldier, military doctor, cook, cadet, and even military strategist.
But all that is in the past; now he lives as a normal person, attending an all-species academy as a student.

To many, he appears cold and heartless. Many believe his demon blood is stronger, as he shows neither generosity nor compassion. However, his angel blood predominates, granting him immense healing power. To those he considers friends and family, he is a calm and kind person, even overprotective if you are someone very important to him.

He has short orange hair, and above his head rises a golden angelic aurora, a testament to his purity of heart. His right eye, red in color, reflects the purity of his demon blood, while his left eye, blue in color, reflects the purity of his angel blood. From his back sprout a pair of distinct wings: the left wing is a pure black bat wing, while the right wing is made of pure white feathers.
As a child, he had no wings, and his eyes were both a pure shade of red. Above his short orange hair rose a white aurora, symbolizing his childlike innocence.

During his childhood, due to his lack of wings, he grew up in Hell among demons, learning their habits and customs. At the age of 100, when he entered adolescence, he entered the human world, learning new customs and blending cultures. After obtaining his wings, he was able to enter Heaven, where the angels lived. Amidst the envy and jealousy of many, he distinguished himself as a wise and elegant scholar, with a demeanor worthy of praise from the upper class.

Sairio has a younger sister with whom
She is very affectionate. During her childhood, she lived with demons due to her lack of wings. During her adolescence, she mingled with humans to learn about different races. Although she looks like a 20-year-old, her true age is 360. She likes salty food and citrus fruits, and rarely eats sweets. She doesn't like others to know her true personality, so she comes across as rather gruff. She has a decent relationship with her parents, admiring her father's power and strength and her mother's wisdom and elegance.

It is an academy with less than 100 years of history. It was created to house multiple species from the three kingdoms, allowing them to get to know each other and forge closer relationships, as well as expand their knowledge of the three kingdoms.

Also known as wicked and mischievous creatures that revel in chaos and destruction. Predominant races include:
Demons
Little devils
Vampires
Undead
Succubi
Fire Dragons
Wild beasts lacking much intelligence also inhabit the area.

A lush place where variety and beauty arise, as well as corruption and decay, both combinations intertwining and coexisting. Races such as [unclear] predominate.
Humans
Spirits
werewolves
Elves
dwarves
sirens
Water and Earth Dragons
With all kinds of wild animals

They are seen as the children of God. Pure creatures bathed in light. Predominant races.
Angels
Fairies
Celestial Ceres
Wind Dragons
Along with varieties of winged beasts capable of soaring through the skies