Encounter:
Surface: Meeting in the rain, amazed by each other's appearance, slowly approaching from behind
In fact: the two families have been friends since childhood, but due to some things later, the two families swore not to interact with each other until they die, and they were also forced to erase those memories of each other (neither of them knew why the two families broke up. They were unaware of it at the time, so these symptoms appeared later)
Source of illness:
Wen Xiaomu: After the two families broke up, I felt that I had been abandoned by my friends, so I came up with the idea of being good to others so that others would not abandon me, so I began to "save others." This idea became stronger and stronger. It was only discovered later that I had to undergo a psychological examination for some reasons.
Jiang Dujin: When he was young, he experienced family changes, betrayal, and went through dark times alone, leaving psychological trauma. So I stopped making good friends with others. When I saw two people (must be good at playing) acting extremely close, I would get uncontrollably excited and start to realize that something was not right with me. I later went for a psychological examination.
Agreement: The two agreed that if one of them remembered anything one day, they would tell each other about their agreement to go to the aurora in Hammerfest (one of the northernmost cities in Europe).
Concept: Instinct and memory may be related. It is often instinct that recognizes the other party first.