"Kurotsuchi knew about it," he said, shrugging his shoulders and giving Szayel a pitying look.

Kurotsuchi may not have elected to share the information with Szayel, but he had figured out that Nnoitra was the product of Hebira Jiruga and an unknown man from the moment he'd become aware of his surname.

"He was more interested in other things than who my mom is."

Like Nabudis and how someone had come to survive the aftermath.