I like "I Need You" because it is so poignant.

It is a song that poignantly expresses the complex emotions of being hurt while in love.
The emotional melody and the members' vocals blend together, making the sad atmosphere of the song feel even deeper.
The part where the emotions burst out in the chorus is impressive, so I get immersed every time I listen to it.
It is a song that is good to listen to while savoring the lyrics, as you can feel the anxiety of youth and the pain of love together.
If you like BTS's emotional music, this is a masterpiece you definitely want to listen to again.