noun
future affairs; posthumous affairs
Formal term for matters to be dealt with later, especially after one's death. Often used in legal or solemn contexts.
彼は後事を妻に託して旅立った。
He entrusted his posthumous affairs to his wife and departed.
遺言書には後事について詳しく書かれていた。
The will detailed the affairs after his death.
Compound of 後 (after, later) and 事 (matter, affair). The exact historical derivation is uncertain, but the word has been used in formal writing to refer to future or posthumous affairs.