It's basically one of the favorite songs of people who listen to BTS songs, the vocals and lyrics are just damn good. It's sang by Jin, Jimin, Jungkook and V.

FOR THOSE WHO DIDN'T KNOW:

The TRUTH UNTOLD is based on "La Citta Di Smeraldo" It's the story of a man who lived in a castle and kept to himself because he thought himself to be ugly.

One day, a woman came near his castle and picked his flowers.He was angry at first but eventually became curios and waited for her. He found out that she was actually selling those flowers for a living. The man fell in love but didn't want to show himself because he was "too ugly" (you know that can't show you me, give you me)

So he decided to plant a flower that didn't exist on the planet so she could sell it at an expensive price.
Eventually he managed to fill his garden with them but the woman stop coming.

He then learned that she died.That part where they sing, "but I still want you" is about him regretting not telling her his feelings all because he didn't love himself first.

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Well, I was also so emotional to know the whole story. It really fits well with "LOVE YOURSELF" I came through this information while listening the song and it gave another meaning to the song.