In the Artemisia of Forgotten River, the soul fire flies away like fireflies.
Just because of an obsession, a ray of living soul entered here and wandered among the reeds for thousands of years, just to see the remaining soul for the last time.
It's just that nature is unkind, until the memory dissipates, the end result is that we can only see each other and then disappear.
Just because thousands of years ago, that residual soul had turned into the soul fire in his heart, guarding it silently until it dissipated.