Zero and One are the origin and code of the game. They have lost their memory. Zero was thrown into the reincarnation copy, and One became the player from earlier. The ring is the medium and the data. It has the same origin as the two of them. It can also be said to be their natural weapon.
Everyone in the reincarnation is in a computer, only consciousness is left, and the brain produces wisdom.
Intelligent brain is a medical consciousness device for treating mental illness or other diseases. The stimulation copy is used to stimulate nerves and other cells to promote self-healing.
Purpose: You can be yourself without memory