核となるのは、信頼関係だ

N3 核 kaku nucleus, core, kernel N5 なる naru become, turn into, happen N3 信頼 shinrai trust, reliance, confidence N4 関係 kankei relation(ship), connection

N1 核 kaku nucleus, core, kernel N3 信 shin faith, truth, fidelity N3 頼 rai / tano.mu, tano.moshii, tayo.ru trust, request, confiance N3 関 kan / seki, -zeki, kaka.waru, karakuri, kannuki connection, barrier, gateway N3 係 kei / kaka.ru, kakari, -gakari, kaka.waru person in charge, connection, duty

N5 〜と to Indicates company, quotation, natural condition, complete list, or direct connection between elements N5 〜の no Indicates possession, relation between nouns, nominal explanation, or turns a verb into a noun phrase N5 〜は wa Marks the topic of the sentence, indicates what the sentence is about, can contrast with another element, organizes main information