noun
afterlife; the next world; the world beyond
Primarily a Buddhist term for the world after death, but also used in general contexts to refer to the afterlife or the next life.
彼は来世を信じている。
He believes in the afterlife.
来世でまた会おう。
Let's meet again in the next world.
From Middle Chinese 來世 (MC lʌi ɕiᴇiH), literally 'coming world'. The reading らいせい is a rare alternative, possibly influenced by the on'yomi of 世 as せい in some compounds.