This is a time-travel story about a certain woman with a supporting role
There is the word Mary Sue in her name, but she is destined not to be a Mary Sue
She obviously holds the ideal of "cherishing life and staying away from the protagonists", but she was assigned to an academy full of protagonists.
Stella: Oh, Blaise, I was wrong, I should have gone to Beauxbatons from the beginning.
Blaise: Oh, no, dear, I don't mind if you're a Gryffindor, at least I can still see you more often.
Merlin knows what's going on in the world. Merlin knows what the future will be like. We always shout that Merlin knows. But Merlin said innocently - I don't know anything.