"I hope you understand that this is a necessary measure."
Kyosuke didn't hesitate to place his trust in others. At the same time, he was used to assuming the worst of them.
Help Hyuga Yayoi?
No problem.
Spend fifteen thousand points?
That was fine too, as long as she was worth it.
But he would never trust her completely. A mere pledge of loyalty wasn't nearly enough. For them to work together in earnest, he had to be able to control whether the girl lived or died.
Over the course of three days, Kyosuke fully mastered the Caged Bird Seal, then quickly helped Hyuga Yayoi remove the curse.
He also accomplished two other things.
First, he asked Uzumaki Mito to seal the Otsutsuki Cells and use the Eight Trigrams Seal to disguise them as a Caged Bird Seal.
Second, he placed a new curse on the girl. It wouldn't affect her Byakugan, but he could take her life at any moment.
Hyuga Yayoi was clever. She knew that this was the only way the boy would truly trust her.
"This is the price of freedom," the girl said.
He placed the Cursed Seal on her wrist, and added a Flying Thunder God Mark to the formula.
When he was done, Kyosuke took a second set of documents from his robes.
"Cell transplant technology. If you master it, maybe you can get rid of the thing on your face for good."
"Of course, I don't recommend doing that."
Since they were alone, Kyosuke didn't hide the existence of the Tenseigan from her.
Only after hearing his explanation did the girl learn that the cells causing her so much pain came from her clan's ancestor, who had lived thousands of years ago.
When she heard that the Tenseigan could give her the