"A perfect plan. Every step links to the next, cutting off every escape route Muzan has. Just what I would expect from a masterpiece by you and Shinobu."
Tamayo looked at Rokuya. A sudden, resolute willingness to die entered her eyes.
"This medicine is extremely fragile. Once exposed to air or an external energy impact, it will lose its effectiveness. And Muzan is too fast. Ordinary swordsmen cannot even get close to him."
Tamayo stepped forward and looked straight into Rokuya's eyes.
"When the final battle begins, at the instant the mansion explodes, I need you or Oyakata-sama to create an opportunity for me. I will slip onto the battlefield myself and inject this medicine directly into Muzan's body."
"Lady Tamayo, no! Absolutely not! You'll die! You'll be dragged into the Infinity Castle along with Muzan!" Yushiro shouted in horror, stepping forward to grab Tamayo.
"Stand down, Yushiro," Tamayo snapped sternly. It was the first time she had ever shown Yushiro such a cold expression.
Yushiro froze in place. His hands trembled, and his eyes instantly reddened.
"I have clung to life for hundreds of years, spending every day in regret and self-reproach. My husband, my children-I killed them with my own hands after becoming a demon. Only Muzan's blood can wash away this sin."
Tamayo turned back to Rokuya, her eyes filled with pleading and determination.
"Mr. Takanashi, please promise me. Even if it costs my life, I must deliver this poison into his heart with my own hands. It is the only reason I have lived this long."
The atmosphere in the secret chamber grew unbearably oppressive.
Rokuya looked at the frail yet incredibly tenacious woman before him and slowly straightened.
He raised his right hand and rested it steadily on the hilt of the Shura Blade at