After successfully planting the minute-stones inside the Destroyers body, Jun shouted at the top of his voice: "Everyone, get back!"
He was expecting the Destroyer to explode from the inside and might send those black plates flying. If someone accidentally got hit by those plates, they would receive too much damage or would probably die.
The Destroyer felt something unfamiliar within its body. When it found out what it was, it was already too late and the minute-stones already started growing.
As the minute-stones expanded, the legs and stomach which received most of the stones suddenly bulked up. It was like a side-effect of someone who frequently used steroids to gain muscles.
A Destroyer's skin was naturally tough and resilient from the outside while soft from the inside. Due to the sudden expansion, the skin couldn't contain the boulders that developed inside its body.
