In case a player become a storyteller, or a storyteller becomes too attached to an NPC, theres a risk for unfair judgement or the percivment of such, whatever the case actually is. To try handle this before it becomes a problem, were implementing rules on how to handle it.
An NPC that becomes too personal for a ST becomes a Player Character instead of being counted as a normal NPC.
Any characters made to be personal for the ST is a Player Character and not an NPC.
A storyteller will not rule judge or run plots directly involving their own character, any such judgements and plots will have to be run with another member of the staff.
This is to ensure theres no shadow of a doubt that rulings are fair and without personal stakes.