# Demon Slayer: Kimetsu no Yaiba, Vol. 15
## The Final Battle with Upper Moon Six
- **Gyokko's Downfall**
- Tanjiro and Giyu confront Gyokko in his water-filled domain.
- Tanjiro uses his Hinokami Kagura technique to counter Gyokko's illusions.
- Gyokko is defeated after exhausting his strength and losing control of his domain.
- **Sanemi vs. Daki**
- Sanemi faces off against Daki, who has regenerated after her previous defeat.
- Sanemi's unique blood type proves resistant to Daki's attacks.
- Daki is ultimately killed by Sanemi's relentless assault.
- **The Pillars' Resolve**
- The Hashira reflect on their duty as demon slayers.
- Each Hashira reaffirms their commitment to protecting humanity from Muzan.
## The Healing Process
- **Tanjiro Recovers**
- Tanjiro rests and recovers from his injuries sustained during the battle.
- He reflects on the sacrifices made by his friends and family.
- Nezuko continues to show signs of retaining her humanity despite being a demon.
- **Support from Allies**
- Zenitsu and Inosuke recover alongside Tanjiro.
- They share stories and bond over their experiences in the Infinity Castle.
## Preparations for Future Battles
- **Training and Strategy**
- The Demon Slayer Corps begins preparing for future encounters with the remaining Upper Moons.
- Tanjiro trains to refine his breathing techniques further.
- **Muzan’s Growing Threat**
- Intelligence suggests that Muzan is becoming more desperate and aggressive.
- The corps strategizes on how to locate and eliminate Muzan once and for all.
- **New Information**
- Kyojuro Rengoku's father provides insights into ancient texts about defeating demons.
- This information could hold the key to finding Muzan's weakness.
## Emotional Reflections
- **Memories of Fallen Comrades**
- Tanjiro remembers those who have fallen in the fight against demons.
- He vows to honor their memory by continuing the fight.
- **Hope for the Future**
- Despite the challenges ahead, there is hope among the Demon Slayers.
- The bonds between the characters strengthen their resolve to see the mission through.