This book is a compilation of Letters written by Army (BTS fandom) on the occasion of The Birthday of the band member-Mr. Kim Seokjin. As the title speaks, Mr.Kim Seokjin is known as 'The Moon' among the fandom. The silver voice arising from a place known to be a center of education and religious practices by kings-Gwancheon-si. He has being incredible in every phase he faced all along to get to this point. Armies want to convey to him how grateful they are towards him and How he has inspired over millions of people through his songs, giving them a sense of assurance of a guiding light over them and making them realize their epiphany! Armies are wishing him "A Very Happy Birthday" and sending him messages filled with lots of love and good wishes. Hope you enjoy reading them.