Reiryoku or spiritual power is the total amount of spiritual energy your character possesses. There are two ways to become incapacitated in this RP, one is being defeated and succumbing to wounds, and the other is running out of Reiryoku. Reiryoku can be expended to boost Strength for singular actions, and is used for particularly powerful techniques and Kido (not all techniques and Kido spells require reiryoku usage).

Reiatsu is your general aura, and spiritual pressure, the amount of pressure your reiryoku puts out. The more reiryoku you possess, the more of it spills out of you constantly as reiatsu. It can also be actively boosted by focusing entirely on its output (this does not spend reiryoku).

One big benefit of Reiatsu is that the value of your Reiatsu is how much you can spend on Reiryoku actions for free. For example, if your Reiatsu is 50, then you can use 50 Reiryoku for free granted the action does not exceed it. If it does exceed your Reiatsu, you will pay the cost minus your Reiatsu.