What was the title of this book? What was the story?

One day in 1945, a mysterious baby girl appeared in the orphanage of Cleverland. No one knew who her parents were. She grew up alone and had no one to interact with her.
It wasn't until one day in 1963, when she fell in love with a tramp for no reason, that things got better. However, the good times did not last long. Unfortunate events happened one after another. First of all, when she found out that she was pregnant with a homeless man's child, the homeless man suddenly disappeared. Secondly, when she gave birth in the hospital, the doctor found out that she was a hermaphrodite, which meant that she had both male and female organs. In order to save her life, the hospital gave her a sex change operation and she became him. The most unfortunate thing was that the little girl she had just given birth to was kidnapped by a mysterious person. This series of blows made him unable to recover from the setback, and he ended up on the streets and became a homeless tramp.
Until one day in 1978, he walked into a small bar drunk and told his unfortunate experience to an older bar staff. The bartender sympathized with him and offered to help him find the homeless man who made him pregnant and then disappeared. The only condition was that he had to join the time travel special forces.
They entered the time flying car together. When the car returned to 1963, the waiter let the tramp out. The tramp inexplicably fell in love with a girl who grew up in an orphanage and got her pregnant. The waiter traveled for more than nine months in the 'time flying car' and snatched the newborn baby girl from the hospital. He then used the 'time flying car' to bring the baby girl back to 1945 and secretly placed her in an orphanage in Cleverland. Then, they brought the muddle-headed tramp back to 1985 and let him join their Time Travel Special Forces.
After the tramp had a formal job, his life was on the right track. Gradually, he got a good position in the special forces. Once, in order to complete a special mission, his superiors sent him back to 1970, disguised as a bar waiter, and pulled a homeless man into their special forces.

Answer 1

The Nine Lives of Rebirth.