I don't think any story can avoid a Mary Sue.
I wasn't even willing to seriously come up with a name for my character. If they have names, they are no longer mine.
I once told you that I would write a story for you before graduation. I'm very sad that the actual ending is not what I imagined, so what about here? I have set an ending for you. Please tell me, in the end, will the story go as far as reality?