Bleach: Watch Closely, This Is How You Use a Zanpakutō

"Mayuri Kurotsuchi, that madman... He was already thinking about creating artificial Shinigami a hundred years ago."

Masatsuki Aozaki flipped through Mayuri Kurotsuchi's research notes, clicking his tongue in admiration.

"Too bad Gikon technology didn't exist back then, and neither did Mod Soul technology. He had to figure it all out from scratch... That must've been a nightmare."

The foundation of Gikon technology was based on Kirio Hikifune's temporary soul techniques, while Mod Soul technology had yet to be developed even now.

For Mayuri to tackle such a difficult project alone—it was no surprise how challenging it had been.

But his efforts weren't entirely fruitless.

Masatsuki flipped open another notebook.

Inside, it documented a technique—one that could completely isolate Reishi.

As he read through it carefully, a realization struck him.

"No wonder this guy wanted to research the Quincy!"

This technique had been developed by studying how Quincy manipulate Reishi.