godan verb (-u), intransitive verb
resonate together; sound in harmony; reverberate mutually
Describes sounds or vibrations that interact and blend, often with a sense of harmony or mutual influence. Can be used literally for musical or acoustic contexts, and metaphorically for emotions or ideas resonating between people.
教会でパイプオルガンの音が響き合っていた。
The sounds of the pipe organ resonated together in the church.
二人の気持ちが
Their feelings resonated with each other, and they quickly became close.