The ending of " Haruhi Suzumiya's Melancholy " was open-ended without a clear ending. The main plot of the novel was about Haruhi Suzumiya's high school life and her experiences in the strange world, while interweaving her relationships with various characters. The climax of the story was in the 13th volume, when Haruhi Suzumiya decided not to continue participating in the plan due to a misunderstanding with the leader, resulting in the failure of the entire universe plan. However, at the end of the story, Haruhi Ryomiya restored contact with the leader and reconciled with him, rejoining the universe project. The ending of the novel left a lot of open space for the readers to interpret Haruhi's fate according to their own understanding and imagination. Some people might think that Haruhi would succeed in her plan, some people might think that she would suffer more setbacks and failures, and some people might think that she would return to the past and meet the leader again. In short, the ending of Haruhi Suzumiya's Melancholy was very imaginative and open-minded, allowing the readers to freely explore the deeper meaning of the story.