本音を

one's true feelings

→ 本音
phrase Rare #35,378
one's true feelings 本音 means “true feelings” or “real thoughts”; を marks it as the object of the verb that follows.
JA: 彼女は本音を話してくれた。
EN: She told me how she really felt.

本音を聞かせてただ叶えてみたいからハアッ!

Tell me how you really feel—I just want to make it come true. Hah!

— Cosmic Princess Kaguya! (2026)

彼は本音を出した。

He spoke his true feelings.

曹操は自分の本音を決して話さない

Cao Cao never reveals what he really thinks.

— レッドクリフ Part I (2008)

人は本音を隠すものだ。

People tend to hide their true feelings.

本音を言えよ。

Tell me what you really think.