Paisley Kirk also became the Son of Creation, and descended to the Lower Realm with Leilani May's four major disciples. As for why they descended, perhaps only Emperor Leilani May knew.
And it was true, part of Paisley Kirk's memory had been erased, so even if Yusuf Zuck met her again, she would treat him as an enemy just like before, and she might even threaten suicide.
So rather than trying to confront Emperor Leilani May now to reclaim Paisley Kirk, why not take a trip to The Nether World?
For many years, Yusuf Zuck had never forgotten Ariel Higgins, never forgotten that strange dream. The dream Ariel Higgins entrusted to him was exactly like reality; he was certain it wasn't just his imagination or a mental demon, but that in this universe, in the obscurity of death, people really did reincarnate and their souls lingered after death.
Perhaps cultivators or immortals who defied Heaven didn't, but the most ordinary mortals possessed the cycle of six paths of reincarnation.