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肝胆相照らす， 肝胆相照す， かんたんあいてらす
1. to be profoundly compatible, to be inseparable, to be so close as to reveal to each other the bottom of one's heart
深刻契合，密不可分，亲密无间到彼此能窥见对方心底最深处的秘密；肝胆相照
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肝， 胆， きも， たん， キモ
1. liver, innards
2. courage, spirit, pluck, guts
3. crux, essential point, key
肝，肝脏