It should be the imagination of the single old man before he died. He never fulfilled his parents' wish to bring his daughter-in-law home. At the same time, he recalled the time when his parents were together, so the heroine is just a self-projected ideal. For what one person did, he might also be at fault, such as the waiter at the ice cream shop, so he avoided and couldn’t help but recall, so in the end, the old self killed the young self. When the heroine hugged and separated from the old man in the corridor, she should have It is the last moment of his death, and all the fragments of intentions are attributed to the ideal sadness.
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