What Does Muzan's Blood Do In Demon Fall の小説・ストーリー

Although Samuel had seen the Demon Boy's black spear before and it was not corroded because of the blood, it did not mean that the ordinary ground could bear it. Previously, the rain was too heavy and the blood flow was very small. It was very difficult to be discovered after being washed. But now, as the dark clouds dissipated and the thunderclouds summoned by the Soul-raising Spell were not fully formed, the rain was very small. Naturally, the corrosion of the divine blood was more obvious. Meanwhile, the blood that flowed into Samuel's body was frantically probing along the damaged internal organs. That was a place where energy gathered not far from the Dantian!