Viktor felt like his vitality was being swapped away, but at the same time, he wasn't feeling any pain or discomfort.
He was only feeling his entire body rippling with pleasure as he moved his cock in and out of her sacred cave. He didn't know giving away his own life force would feel so good.
Now he understood why this forbidden art could be dangerous in the hands of a villain. They could use this to seduce any person and sap away their life force without them realizing it. They wouldn't even feel any pain and would slowly die while feeling like they were in heaven.
But unbeknownst to Viktor, since he penetrated Seraphina's sacred place for the first time, his odic force's density was rapidly increasing, pulsating with vigor and life.
His heart was subtly glowing with a pure light by now, though Viktor was feeling too hot to notice these changes.