Being a Cat in a Dungeon, It's not easy

Alexander is in a moment of total despair at the news of his family's death, he decides to leave his apartment to clear his mind, but this idea leads him to his death, but there was no end to him. There was no light at the end of the tunnel with his family waiting for him.He reincarnated like a cat inside an egg as if it were a joke, but he wakes up and realizes that now his environment is no longer the sweet earth he had known for his entire life.