It wasn't just Castle who knew these cursed things were dangerous. Anyone with a working brain could tell.
So without Castle having to give the order, everyone covered their noses and quickly jumped away from the little iron spheres.
Boom boom boom boom...
The little iron balls transformed into bursts of small flames and exploded rapidly, instantly spraying out a dense spread of tiny nails, shooting towards the crowd.
"Ah—" The bodyguards who couldn't dodge in time were impaled by the nails, covered all over their bodies; the sight could kill someone with a phobia of clusters on the spot.
While some managed to evade the nails, the powder that sprinkled down from the sky left them feeling dizzy, as if they had consumed dozens of pounds of spirits, unable to even lift their legs.
The only one on the field who remained unharmed and unaffected by the poison gas was Castle, because his constitution was the same as Yang Yu's, immune to all poisons.