In the aftermath of her fight with Zaheer, Korra is a broken shell of the powerful woman she once was and must reevaluate her life, and what is important in it. The emotional strain being at Korra's side has started to get to Asami and prompts her to be open to a new experience. Both learn new things about themselves and each other on their journey To Be Whole

At first, the only thing she can see is Korra's face. Her smile shines through the white-gold light, and her eyes are smiling too... (Post-S4 finale Korrasami, takes place on their Spirit World vacation)