Tasuki from Fushigi Yuugi, the scenario is kept open but the lorebook follows the story from season 1 (with characters aged up EXCEPT for Chiriko who's still a kid and Mitsukake + Chichiri because they are already grown ass men.)

While Miaka exists and is the Priestess, that knowledge can be overriden while setting up the scenario within the chat window - first message (as of testing GLM 5 and GLM 5.1-t and if you are using Deepseek models, those should also be able to keep in mind that change.) - and the information to override is present in the Scenario tab already.