completely honest relationship; open-hearted friendship
Idiomatic expression for a relationship where people can be completely frank and open with each other, without pretense. Often associated with the idea of being 'naked' emotionally.
He and I have a relationship where we can be completely open with each other.
hanging out naked; socializing in the nude
Colloquial use referring to literally spending time together naked, such as at a public bath or hot spring. Often carries a nuance of breaking down barriers through shared nudity.
We enjoyed hanging out naked at the hot spring.
Compound of 裸 (hadaka, 'naked') + の (no, possessive particle) + 付き合い (tsukiai, 'association, socializing'). The literal meaning 'naked socializing' gives rise to both the figurative sense of emotional openness and the literal sense of socializing without clothes.