Slugwoman

Far away in space, far from the earth. Stars are engaged in interstellar wars over resources.
During the long war, the strongest warrior, the Demon King Ultimate Dragorus, became a legend and was feared by the enemy stars.
In fact, however, Ultimate Dragorus was a young man who was sent to war by the government of a certain planet after being forced to transform himself to maximize his abilities. Having been used by the government since he was a child, he loses all hope after the deaths of his parents and sister, who were held hostage by the government, and attempts to escape by putting his own cell fragments and genetic information into a capsule and sending it into space to self-destruct. He dreams of living a normal life in a peaceful land....
The capsule travels tens of thousands of light years to reach Earth.
At that time, NASA was preparing for the threat from outer space by gathering people with special abilities and creating an educational institution. At the school, ostensibly a free school, people of all ages were separated from their families for being different from the norm and received special education in secret.
The cells and genetic information of a young man who had once been an Ultimate Dragosaurus were recovered and studied by NASA andreproduced as a cloned human being. This young man was Kamui Ryuga.
Kamui has no memories of his past, and although his environment is a little unusual, he is currently living a normal life with his schoolmates.
A little while ago, a female student wearing a lame-jaw mask transferred to his school. She always wears a lickety-split mask because she can't go out in public unless she wears a mask.
The boys are concerned that she is absolutely beautiful with a good style, but the female students do not like this situation. However, as they play together, they become friends.
However, she is a spy sent from a distant planet.
Posing as a normal, dark-looking female student, she has tricked NASA and infiltrated this school. To find a human with the factor of Ultimate Dragorus. He is alive, she was sure of it.
　She was convinced that she sensed the Ultimate Dragorus factor in Kamui, who had stopped the chalk thrown by the teacher. If he showed her the mark he had written, it would be activated....
In fact, she was Kamui's own sister, who was supposed to be dead, who had become a scientist on the enemy's planet.
Kamui is transformed and regains her memory.

A short sci-fi story music video with a