Genome Tree 20 Volume 12

The hundred handed giant race – Hekatonkheir

Using a Gift of theirs that makes many hands appear from spirit power rather than substance, Yō materialized pale arms around her. If she was able to get used to the giant arms and use them, coupled with the Earth Dragon Gift, she would be able to win the game.

Kasukabe quickly activated the two gifts.
―However,

(—! ! ? % & $ # ! ! ! ?)

Her brain suffered the force of a brunt assault.

There was of course no one there to hit her.

Her brain suffered shock from the increased information that had to be processed.

(How…… How hard……!)

Thinking carefully, humans cannot even use both hands perfectly. Such as “using one’s right hand to write a letter while using one’s left hand to write an argumentative essay.”
This sort of thing, even humans need practice to accomplish. Much less using an enormous amount of arms to work simultaneously without trying once before, adding on the Earth's Dragon Gift, the power for the amount of information that was needed to be processed was comparable to a processor.

(For now, I'll turn off the Earth Dragon's Gift and calm down. Just thinking about controlling all these hands makes me feel uncomfortable. If I perceive the autonomic nerves and give each hand a single command, I might even make them automatic and it shouldn't be difficult after that......!)