Secret Room Swimming Fish?
The sight immediately reminded Jing Yang of the Yorknew City arc from the manga, where Chrollo, leader of the Phantom Troupe, used a Nen fish to devour people. It was one of the many stolen Nen Abilities sealed within his book, Master of Stealth.
As its name implied, Secret Room Swimming Fish could only exist within an enclosed room.
Any part of the body bitten off by it would not hurt, bleed, or cause death.
But once the "secret room" environment was removed...
"Is that your Nen beast?" Jing Yang looked at the white Nen fish seemingly feeding inside the room, then pointed his thumb toward the upper corner behind him. "There are surveillance cameras all over the corridor. You deliberately didn't avoid them?"
Pariston smiled. "Why would I avoid them? I never went in. Besides, he isn't injured, is he?"
On the sofa inside the room, Okjeski had his back to the window—and to them. The white Nen fish floating through the dim indoor air took bites from him now and then. In that brief time, chunks had disappeared from Okjeski's fat body here and there... Yet despite his condition, not a single drop of blood had spilled. Okjeski trembled. He seemed to want to struggle free, but one leg and half his body were already gone. He had no strength to exert and could only sit on the sofa in despair.
"Tell me..." Though Pariston was smiling, his face seemed covered in heavy shadows, and something sinister radiated from him. In a casual tone, he asked Jing Yang, "Can he hear us?"
Jing Yang noticed that when Pariston said that, the fat man on the sofa with his back to them visibly shuddered.
"He can hear us," Jing Yang said. "But he hasn't screamed