Psyblock

"Psyblock is but a shield, and shields can be broken."

- Masahito Nakamura

Psyblock is an orally-administered drug that strengthens and protects the mind against psychic intrusions.

History
SM Raito Nakamura took psyblock to shield his mind from the Psymancers in the Galactic Government to make it harder for them to discover his true intentions.

In 150,084 CMT (Day 76 of The Mazkertis Paradox arc), SM Raito swallowed "enough psyblock to give Sefer Yetzirah a migraine" shortly before his capture in case he would be interrogated by Psymancers. The effects of the psyblock remained after he was taken to Masahito Nakamura's chamber in Pangaea Castle. SM Raito gloated to Masahito that he had taken psyblock, but Masahito replied "Psyblock is but a shield, and shields can be broken", and ordered the Psymancers to scan him. Most of SM Raito's mind remained sealed off to the Psymancers, but they managed to discover evidence that led them to believe that he originated from the Shattered Mirror Universe.