"How have you been feeling lately? Is the erosion still the same as before?"
"It's gotten much better. I can hardly feel that deep Chakra erosion anymore, or that feeling that I might run wild at any moment. That means the treatment is working. But... I don't know if it's just my imagination. I feel like this isn't solely the effect of the treatment. There may be other factors involved that I can't explain."
"What exactly is going on? Can you explain it in detail?"
"I can't really say. I just feel like the deep spiritual imprint he left inside the Cursed Seal suddenly disappeared. It seems as if the danger of this thing has dropped by several levels."
The two people talking were Kushina Uzumaki and Mitaraishi Anko, and they were discussing the Cursed Seal on Anko's body. Mitaraishi Anko had once been Orochimaru's disciple. Before leaving Konoha, Orochimaru had left that disciple a little gift—a half-finished Cursed Seal that had yet to fully stabilize.
Mitaraishi Anko had to be said to have an extraordinarily tenacious life. Anyone who could become Orochimaru's disciple naturally had something exceptional about her. After enduring a round of agony, she survived the Cursed Seal, but its powerful corrosive nature later brought her tremendous suffering.
To resolve her problem, Kushina Uzumaki had previously tried using the Human Cursed Seal to replace Orochimaru's Heavenly Cursed Seal. In other words, she filled it with something similar while stripping away the source of the pain... She was using the Human Cursed Seal as an inactivated vaccine.
This method was correct and could produce results. However, because the spiritual imprint Orochimaru had left in the Cursed Seal was extremely deep, Kushina Uzumaki could only work on it bit by bit, progressing through the treatment in stages. But for