C737 Spiritual Pressure Amplification Device

Spiritual Pressure Amplification Device.

One of Kurotsuchi Mayuri's black technology.

However.

His Spirit Pressure Amplification Device was still in the process of being developed. Originally, the priority wasn't too high.

After all.

He had too many things to research.

Many things were more important than spiritual pressure amplifiers.

But...

Since Puyuan Xizhu had the same intention