noun, noun which may take the genitive case particle 'no'
living together as a pair; two-person household
Refers to a living arrangement where two people share a home, often a couple or parent and child. Can be used as a noun or with の to modify another noun.
結婚してからずっと二人暮らしです。
We've been living together as a couple ever since we got married.
二人暮らしのアパートを探している。
I'm looking for an apartment for two people.