Death - Saving Killua

To save me, Killua... Turned upside down? ! Damn it! This is not possible! ... I actually got the Zanpakutou Fire Phoenix at the last moment, and am I the strongest in the fire system? ! When I came to Soul Society, I thought that if I found Killua's soul, I could take him home and live peacefully, but unexpectedly... He disappeared! ! ! Killua's soul is gone... So, I had to take Mao's entrance exam, and I had to enter the Gotei 13th Division of the Joureitei, just to have a little foundation to find Killua... PS: This article won't be very long. People who don't understand will automatically be redirected.