Ongoing
His name is Kurosaki Ryuichi. When he traveled to the world of Net King, he did not have the invincible system like other time travellers, but only a steel-like body.
But he relied on this body to create his own great reputation.
The world calls him this: Destroyer of Worlds!
Duke: He is the real King of Destruction!
Polk: He ruined my tennis!
When Kurosaki picked up the racket, the world trembled.