The world after death; the next life or afterlife (often used in Buddhist or religious contexts).
彼は来世でまた会おうと言って、笑って死んだ。
He said, "Let's meet again in the next life," and died smiling.
仏教では、行いによって来世のあり方が決まると考えられることが多い。
In Buddhism, it is often believed that one's actions determine the state of the next life.
現世の苦しみは来世で報われるという考え方もある。
There is also the idea that suffering in this life will be rewarded in the afterlife.