I'm not aware of any specific well - known work directly named 'empress new name neverending story'. It could be a very unique or niche concept that someone has created.
Perhaps it refers to a new era or chapter in the life of an empress, like a new name symbolizes a new identity, and this new identity is at the center of an unending story. It might be about her reign, her relationships, or her personal growth that just seems to go on and on without an end in sight.