Kawaii Disease

Kawaii Disease is a Disease that kills people by making them look Kawaii. This makes other people die of jealousy of how kawaii the person is. The person that's infected will after three months die of their own kawaiiness.

Symptoms
A sudden look of kawaiiness on someone's face. The person that's infected will try to make other people jealous of their kawaiiness.

Cures
The cure is plastic surgery and theraphy.

Trivia

 * The disease was unleashed by Redman's species in Universe 65
 * It is apparently sentient
 * It can unleash creatures called slimes

Slimes
Slimes are the creatures that spread the Kawaii Disease

For information about the actual slimes from Slime Rancher visit Slime Rancher Wiki.
They are pawns of the Kawaii Disease and they spread it.

The JSDF produced a black evil slime to kill the other it proved effective but water killed it.