約束を守るのは当たり前だ

N4 約束 yakusoku promise, appointment, arrangement N3 守る mamoru protect, defend, keep a rule N3 当たり前 atarimae natural, obvious, common

N3 約 yaku / tsuzu.maru, tsuzu.meru, tsuzuma.yaka promise, approximately, shrink N3 束 soku / taba, taba.neru, tsuka, tsuka.neru bundle, sheaf, ream N3 守 shu, su / mamo.ru, mamo.ri, mori, -mori, kami guard, protect, defend N3 当 tou / a.taru, a.tari, a.teru, a.te, masa.ni, masa.nibeshi hit, right, appropriate N5 前 zen / mae, -mae in front, before, devant

N5 〜を o Marks the direct object of an action, appears before the verb, shows what receives the action 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