As mentioned earlier, the profession of the Soul Catcher emerged during the era when various evil gods, monsters, and demons from beyond the world began a rampant invasion.
When confronting these "intruders" and capturing their souls to transform into one's own power, there is no need to consider much.
As long as you can defeat them, complete the ritual, and without any backup measures, you can completely disregard their will.
However, if the captured soul is within the world, that is, a native of this world, you cannot do this.
After all, to the world, you all are the same, all belong to the life of this world.
So you need to engage in certain negotiations, stipulating a period of time for capturing the soul, to form a contract.
The greater the gap between the two sides' powers, the shorter this time will be, but it is calculated at least in years.
