Because I made a short play, I compiled the script of the short play into a novel
A reincarnated actor who has performed as an extra in modern times with the memory of hundreds of reincarnations, through the tracing mechanism established in his previous life, rediscovers the Iron Rooster Immortal who has lived for three thousand years. The two start a hard-core debt collection and hilarious co-renting life that spans thousands of years, and they talk about being disliked but are actually close friends.