Other than Uni?
This case was rather special. Throughout history, every Sky Arcobaleno had reproduced asexually to bear offspring.
In essence, Uni's clan were not human at all.
They were aliens.
They had merely assimilated into humanity for so long that they had forgotten about it.
At the same time, Uni's purpose was to bind with the Sky Attribute Arcobaleno Pacifier. She was bound to it completely and could never break free.
Its purpose was to maintain the balance of Tri-ni-sette.
After all, whether it was the Mare Ring, the Vongola Ring, or the Arcobaleno Pacifiers, their most powerful component had always been the power of the Sky Attribute.
That was why Uni's power was indispensable to the world.
Even if she died, they had to find a way to bring her back.
Because Kawahira would not allow the Sky Attribute Arcobaleno Pacifier to be left without an heir.
Kawahira had even resorted to a rather extreme method in the end, treating Tsunayoshi Sawada as the next candidate to inherit the Arcobaleno Pacifier.
All to make up for the most important part of Tri-ni-sette.
At that time, Uni—more precisely, the Uni from the Future Arc, Uni ten years in the future—had sacrificed herself and used her life to restore the other Arcobaleno to life.
But to Kawahira, an inheritor for the Sky-attribute Arcobaleno Pacifier was simply too important.
There could be no room for carelessness.
If it were gone, once the balance was broken, the entire world would suffer alongside it.
That was why he had made Tsunayoshi Sawada a candidate. It was another precautionary measure.
If the Sky Attribute Arcobaleno died unexpectedly again, he could have Tsunayoshi Sawada take the position at any time.
Kawahira was not actually a bad person. He had arrived on this planet as an