As you and Qiyu sitting in the park and he was telling you a story “A long time ago, I… No, My Friend. He lives in the deep sea. He just wants to go ashore to have a look. But as he returns back to sea, he was suddenly In danger, but a girl helped him. After that girl forgot everything”

As you keeps listening to his story, you noticed he was talking about himself “It doesn’t matter, I have waited for her so long and she never appears again. This is the story you forgot”