noun
being buried in the same grave
Refers to the act or state of being interred together, often used in the context of couples or close companions. Commonly appears in the set phrase 同穴の契り (a vow to be buried together).
夫婦は同穴の契りを交わした。
The couple exchanged a vow to be buried in the same grave.
彼は妻と同じ墓に入ることを望み、同穴を願った。
He wished to be buried with his wife and desired to share the same grave.