Tactics
It was a sound plan. As the Life Leech swallowed the piece of meat, its body portion attached to the mouth bulged. Also, due to the bone lodged within the meat, it wasn't something that could be compressed anytime soon, thanks to it originating from a Tier 1 One-horned Rhino, a Frenzy Beast focused on strength and defence.
The boy grabbed onto the bulged portion, his hold anchored using the rigidity of the bone in the swallowed meat, allowing him to hold the Life Leech in place. He placed a hand below it, preventing the Life Leech from swallowing it further in.
A psychic arm entered the open mouth of the Life Leech, seeping into the piece of meat, and preventing it from being pushed out. Immediately, a couple more psychic arms followed suit, reinforcing the pressure exerted upon it.