1. "The power of the blue obsidian isn't infinite; in fact, it's diminishing,"
2. "But because it stores so much energy, the decline is barely noticeable."
3. "Ah!?"
4. "I was just about to tell you guys, look."
5. "Wait, its power hasn't diminished but increased?"
6. "This is the piece you took."
7. "I found a way to recharge the blue obsidian."
8. "Really!?"
9. "Yeah, once when I was treating a wound, I accidentally splashed blood on the blue obsidian."
10. "Huh?"
11. "When I was about to wipe it off, I found that the blood had already been absorbed completely."