Kanetsuo Syndrome

Kanetsuo Syndrome or KTS is a deadly condition in the Supernannya/Pokemon AU

The Condition
Kanestuo Syndrome primarily affects Psychic-Type Pokemon, usually Pokemon considered weaker than legendaries, the condition is considered more dangerous in pure-Psychic types.

It causes their psychic glands to create seven times more psychic hormones than usual.

It is responsible for 60% of all Espeon deaths

Known sufferers
Hinomaru: Diagnosed with the condition after evolving

Unknown female Espeon: Died one day after evolving

Grace: It's very likely she inherited the condition.