RM, Jin, SUGA, J-Hope, Jimin, V, and Jungkook formed BTS in 2013. They have received praise since their debut for their music and lyrics, which explore a variety of topics, including self-love. 

It is less than a month after BTS' own 9th debut anniversary (June 13) that the group celebrated the ninth birthday of their fans, ARMY.

A sweet letter has been penned by Luna to BTS today. Please read the letter below. [Please note: This letter was shared on July 9.]

It's ARMY day today. It is a very special day today. I cannot put into words how special this day is to me. [On] this day, you named not only your fandom but one of my identities as well.

My life used to be hell before I joined the ARMY. There were family issues, study pressure, and making friends, and I began to hate myself. Everything used to feel hopeless to me. 

However, there was a day when my heart told me to join the BTS Army. As I was scrolling through my phone on my first day as a BTS ARMY, I saw Namjoon giving a speech to the UN.

I decided that I had to join BTS ARMY on December 1. His speech inspired me greatly. The thought that came to me was, "Love yourself first before you can love someone else". 

However, there was a day when my heart told me to join the BTS Army. As I was scrolling through my phone on my first day as a BTS ARMY, I saw Namjoon giving a speech to the UN.

After that, I watched more of their songs, quotes, speeches, and more. So, I started to love you more (sorry Joonie, don't shave my eyebrows), but I still started to love myself.

ARMYs' videos, sometimes similar to BTS' inspirational videos, sometimes similar to BTS' crackhead videos, started making me enjoy all your videos. 

ARMYs will always stay by your side even if you end up chubby. I know BTS * ARMY stories will never end even if you do heavy diets even if you can't. 

I would like to thank Borahae BTS for making me love myself, for making me confident, and for making me believe in myself. I never got noticed by you, I never met you, I never attended your concert. 

However, I will always be a member of the ARMY. My promise to you is that no matter what happens, I will always be by your side. In addition, I promise to love myself.

My whole life will be dedicated to defending you. In addition, I will demonstrate that BTS is not a distraction, but a source of inspiration. Borahae Yours lovingly Luna