Hard to say

In the end, Rain decided to bring only those who were relatively old to his pocket dimension among the magic people. The new generation didn't have anything to do with the current situation… to some extent, so Rain decided to leave them alone to have a life of peace. Only those who were older than thirty were forced to join him.

At first, no one felt like listening to Rain, but after seeing the residents of his pocket dimension and hearing him about his goals and the situation, they slowly began to change their minds… 

Level 20: Aura Reading Discern emotional and energetic auras, allowing you to understand the feelings and intentions of others.

Thanks to Aura Reading, Rain could tell that their change of mind was real, so he let them join the camp without being forced to become mana batteries… they had been enemies before, but now they had the same enemies. It wasn't a good idea to treat them like prisoners of war.