彼は帰ってくると約束した。それなのに帰ってこなかった。

He promised to return and yet he didn't.

彼(かれ)は帰(かえ)ってくると約束(やくそく)した。それなのに帰(かえ)ってこなかった。

Kare wa kaettekuru to yakusokushita. sorenanoni kaettekonakatta.

彼 (かれ)

he; him; his; boyfriend

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

帰る (かえる)

to return; to come home; to go home; to go back; to leave; to get home; to get to home plate

と (と)

if; when; and; with; particle used for quoting (with speech, thoughts, etc.); quoting particle; promoted pawn; indicates question (sentence end)

約束 (やくそく)

promise; agreement; arrangement; one's word; contract; pact; appointment; engagement; date; convention; rule; destiny; fate

それなのに (それなのに)

and yet; despite this; but even so; but even then; however; nevertheless; for all that; notwithstanding that

Readings: ヒ、かれ、かの、か.の

Meanings: he, that, the

Readings: キ、かえ.る、かえ.す、おく.る、とつ.ぐ

Meanings: homecoming, arrive at, lead to, result in

Readings: ヤク、つづ.まる、つづ.める、つづま.やか

Meanings: promise, approximately, shrink

Readings: ソク、たば、たば.ねる、つか、つか.ねる

Meanings: bundle, sheaf, ream, tie in bundles, govern, manage, control