While Luke watched those poor beasts being massacred, he realized that he would have to spend a lot of mana. Since he could use that to train his skills, it was fine, but he thought that perhaps he should find a way to have a reserve. There was that skill that Rina and Shalia used, but Luke wanted something bigger.
It would have been nice if Luke could find an item that could help him with that, but he doubted that it existed. If that were the case, all the overlords would use it. Still, Luke had Mana Manipulation, and that was a rare skill that he couldn't even buy with 32 million gold coins, so who knows what that skill could do? After thinking for a while, Luke couldn't believe that he could just forcefully remove his mana cap. So, he needed a way to use his mana, but that he could retrieve it as soon as he wished for it.
