Yearing Secret (切望 シークレット Setsubō Shīkuretto) is Mission 21 of Macross Δ. It first aired on Tokyo MX and BS11 in Japan on August 21, 2016.
Synopsis[]
The Kingdom of Windermere transmits Delta waves through Heinz's song to Al Shahal, sending 85% of the planet's population in a state of comatose. While in prison, Kaname, Makina, and Reina recall the time they first joined Walküre before they are eventually released for their next mission. Meanwhile, Keith discovers that Heinz is suffering from an advanced stage of Var Syndrome while Lloyd reveals that he murdered King Gramia.