Bab 139: Chapter 138 - Telling

Sometime later, Allen came out of the Dungeon and he decided to upgrade The Spiritual control technique. As you can see he has already upgraded most of his techniques. Naturally upgrading those techniques wasn't easy for him but he was still able to do that. Those legends were the most difficult to upgrade. As you know he needed to collect a message amount of dungeon points to upgrade those techniques. 

Naturally, We will also need a massive amount of dungeon points to upgrade the spiritual control technique and because of that he was now also focusing on collecting the dungeon point to upgrade that technique. Before anything you want to maximize the level of the techniques so he could easily use his spiritual energy in any technique and he could also bring out the maximum power of that technique.