Jarvisian Life Elixir

The Jarvisian Life Elixir was a potion created by Jarvis. It dramatically decreases the effects of ageing in humans. Only three people are known to have taken it: Jarvis himself and two of his friends in his early life: Kensa and Etende. It worked, as the three who had taken it had only seemed to have physically aged around five years while a hundred passed. Only one batch was made, the remains of which were stolen at gunpoint by a hooded figure. Jarvis never wrote down the formula, so the key to creating it died with him.

Jarvis speculated that it would be deadly to most non-human forms of life, but as he had not tested it, there is no way of knowing this for sure.

Canonically, the elixir was created sometime between the events of Heat the Soul and the three's reappearance in the main RPG.