The protagonist liked to raise myna birds in his previous life, but he was a novice and liked to raise them. Later, he became so perverted that he only took out the bird's nests instead of raising them, resulting in countless chicks dying in his hands. Later, he traveled through reincarnations as a myna bird. Almost every reincarnation was caused by human beings digging out the bird's nest or accidental death. Moreover, the guy who took out the bird's nest many times was his former self. This made the protagonist regret his previous waywardness. When the protagonist knew that there were only eight birds in the world. The brother (himself) can only be reincarnated as a human if he can live past his tenth birthday. However, the protagonist later discovers an indisputable fact that it is almost impossible for a myna bird to survive in the wild and live past ten years old. So he can only gamble and pray again and again, betting that he will not meet someone who digs out a bird's nest next time. Next time, even if he does, he will let himself meet someone who really likes myna birds. Reincarnations and deaths are also strange.
