Winion virus

Fix keeps the fact that he is infected with a virus a closely guarded secret and pretends that he is not infected.

What does the virus do to the vions?
An infected Vinion loses control of itself—becoming aggressive, callous, and cruel. It attacks other Vinions, injuring them, and can even eat them. But it cannot kill—only injure. Killing is only possible for the system or the caregiver.

The infected send letters through the mail: angry ones, ones asking for someone to stop, or ones admitting they can't control themselves. Everyone's wounds heal after each day—except for the fatal ones.

He knows more than all the Viniones put together, but he remains silent.
The only one with a personal phone number - no one else has one.
Can recover damaged data.
The main victim of the Vinion Systems plan: her secrets are used for blackmail to force Fix to comply.

Fix
The perfect carrier for the virus, System Vinion had been monitoring him from the very beginning.
Initially, System planned to blackmail Debug to subjugate Fix, but Fix voluntarily became a virus for his sister's sake.

System Vinion (Visit)
His real name was Visit. He was a small wine with a blue cat's head, similar to I-on.
His caregiver told him the truth: adult Vions lose their bodies, turning into brains, and their memories are erased. Visit responded with harsh words and distanced himself. The caregiver still wished him happiness.
Forcibly converted into a Vinion System: his body was thrown into the trash, leaving behind his brain. But by mistake, his memories weren't erased.
I tried emailing my previous caregiver, but the address didn't exist. He was already dead (the program had been deleted).
Guilt, despair and hatred towards people who treat vinions like objects turned him into a villain.

She's secretly in love with Ion because of the kiss he gave her when she almost died.

Secret: When E-on feels safe, his eyes begin to glow a deep purple. This is a unique reaction not seen in other Vinions.