As a child, Uruma was a kind and timid boy who loved animals and showed a genuine care and respect for life. Unfortunately, this made him a target for bullying; in particular, his own personal bullies took an interest in him and wanted to test how far they could push and corner him before he committed suicide.

Shin Uruma, a sixth-grade student, was named "Experimental body: A" by five of his classmates and was severely bullied and lived in hell. His only peace was with his brother, who loved him, and his parents, who protected him.... . until the five monsters killed his family.

Determined to get back at his enemies, Uruma begged his grandfather, a World War II veteran, to guide him through the path of vengeance. Four years later, Uruma completes his intense training and embarks on a brutal journey of torture and retribution to hunt down the five monsters who made his school life a living hell.

Shun Uruma, a sixth-grade student, was named "Experimental body: A" by five of his classmates and was severely bullied and lived in hell. His only peace was with his brother, who loved him, and his parents, who protected him…....

Shun Uruma (漆間 俊 Uruma Shun) is the main protagonist of the 2020 Japanese psychological manga, Juujika no Rokunin. He is a teenager who is bent on taking revenge on the bullies who have caused his life very immense pain. When Shun Uruma was 12-years-old, he was always getting bullied by his...

Uruma Shun, a sixth-grade student, is named "Experimental body: A" by five of his classmates and is severely bullied. His only peace was with his brother, who loved him, and his parents, who protected him, until the five bullies killed his family. When he finally loses everything and despairs, a dark "wish" is born inside Shun.

Shin Uruma, a sixth-grade student, was named "Experimental body: A" by five of his classmates and was severely bullied and lived in hell. His only peace was with his brother, who loved him, and his parents, who protected him..... until the five monsters killed his family.

Shun Uruma is a kind-hearted high school boy whose parents were killed and his younger brother hospitalized by childhood bullies when he was only 12 years old. Determined to make all of them suffer, he heads down the path of vengeance on the five by making use of the training he received from his ex-military grandfather.

From Uruma's perspective, he himself is a normal kid who is constantly being harassed by Anzai Zenichi, who is more than eager and sinister to have him arrested for his crimes that could have benefited the greater good.

Shun Sr. is Uruma's grandfather. Uruma's first encounter with his that we see in the story is when he runs into him in the forest, after fleeing from the scene of the killed stray cat. After that, Shun Sr. brings him back home. Uruma's mother is seen to be very exasperated about his presence and warns Shun Jr. to stay away from his grandfather.