What is the ending of Duolai A's dream? Why do Japanese children commit suicide after watching this?

The ending prepared by the original author, but because at least 16 people committed suicide due to this ending, it had to be changed: the protagonist suddenly woke up from his sleep and found himself lying on the hospital bed. It turns out that there has never been anything like this in the world. Doraemon; there is no universal pocket; there is no... In short, the protagonist is a patient who was sent to a mental hospital due to extreme autism. He has been in the hospital for eight years. Jingzi is the protagonist's childhood crush, and all the protagonist's The memory stays in the morning eight years ago. Everything is the protagonist's fantasy (YY), which reflects the indifference of Japanese society and expresses the author's extreme disappointment in society. Later, because readers were extremely disgusted with its ending (the suicide rate in Japan increased significantly during the same period, at least 16 people were directly affected by its ending and despaired of life. "Doraemon" was the only beautiful and simple psychological comfort for these suicides), so It was decided not to use this ending in the animated version.

(Of course you can’t see it in China)