Replace the text

If the Protagonist has not died, the Character with the most PP achieves victory unless that Character is the Narrator (in which case the Character with the second most PP achieves victory). If two or more characters tie for the most plot points then the characters in the tie with the higher relationship score may declare victory.

in rule titled “The End” with

If the Protagonist has not died, the Character with the most PP (of the Characters with a Relationship greater than 0) achieves victory. If two or more of those Characters tie for the most plot points then the Character in the tie with the higher Relationship achieves victory.

Note: Because the Narrator always has a Relationship of 0, I cannot be eligible to achieve victory, so the rule does not need to explicitly exclude me when calculating the winner.