Boost
Leonel took out a stone. It was only as large as his palm, but its heft almost caused the back of his hand to hit the ground. This might not be too surprising if it was others, but Leonel's raw strength now had almost caught up with Aina's before she broke into the Seventh Dimension. His future wife was practically a dinosaur in the body of a lovely woman, so this metric alone was enough to pain jus thow power Leonel was.
The fact this stone was so heavy, though, only surprised Leonel further, that was because he could somewhat already guess what it could do.
This stone was designed to train Weapon Forces. One would sink their Weapon Force into the stone and in return, it would be shattered. This process would be fed back to the individual using the stone and the weaknesses of one's Weapon Force would be reflected to them.