BP 35

“Normally, a Guide should purify the energy they receive and return it, or let it flow away entirely. But since he's accumulated energy in a body that hasn't even properly developed a Purification Device, it's inevitable that it would fill up with toxins.”

“…….”

“Energy usually flows out naturally through a Guide. To purify it, you actually need practice in holding onto it. To achieve that in such a short time... well, it's impressive regardless.”