I wonder what would happen if he made a growth bracelet for his grandpa? It looks like stats increase based on what the stat is, seeing as his magic which was already huge jumped by another 24k*2, for 3 levels that's over 8k per level. His grandpa might not be able to level up as easily but it'd be interesting to see how much 1 level with double growth would be on him. He should definitely give the girls some growth bracelets though, it would make it easier to keep them safe if they are also pretty strong.