Singer Se7en enlisted in the military to serve out his mandatory duties on March 19th at the training center located in Uijungbu of Gyeonggi Province. He will undergo his training for eight weeks before serving out his military duties for 21 months. Long-time girlfriend and actress Park Han-byul wasn't at the site of his enlistment due to her shooting schedule overseas. To express his gratitude to his fans, Se7en released a new song called "Thank You" available for download free of charge.