Five years, that's how long has passed since the world mourned Katara's passing. For nearly two months Korra had been withdrawn and sullen at morning her mentor. The only people she'd talk to where her faithful companion Naga and her lovely girlfriend Asami who had become a bit busy running her company but still made all the time to be with Korra when they moved in together in the city. The first few weeks were spent just figuring out their future's together and how do deal with Korra's inner darkness. Korra had told Asami the truth behind the potion and when she'd explained the key ingredient to her Asami didn't hesitant to offer her blood to Korra who was extremely careful to take the barest amount. And for the next two years they spent growing closer as they stood beside each other when they faced problems especially when Korra decided to visit her parents. Things of course started out strenuous,but when Korra introduced Asami the ice broke and everyone relaxed as they spoke. Eventually old wounds were brought up and Korra's parents broke down in tears as she apologized for not being there as they should have been, Korra tried to hide it but Asami could easily see the tears of joy in her girlfriends eyes when she heard her parents say that they loved her and wanted to be part of her life if she'd let them. It was during their time in the south when Korra became a bit distant from Asami, it wasn't that she actively avoided her but it was more like she always seemed to be working on something in secret. Asami had a few ideas on what she was doing but it wasn't untill she returned from a fishing trip with Korra's dad when she found out what it was.
(Three years ago)
When Asami opened the door she nearly jumped out of her skin at what she saw. Korra the love of her life was standing in the middle of a candle covered room wearing what could only be called furry lingerie with both hands behind her back.
"Well this is a surprise, I'd say you've planned this for a while." Asami said removing the parka she'd gotten and moving to embrace her girlfriend who for the first time stopped her before she got close.
"Asami wait, I... I want to say something first."
"Okay"
Korra took a deep breath then pulled her hands from her back showing Asami the betrothal necklace she'd been working on in secret. The pendant was a light blue crystal carved in the shape of a heart with a deep red gear in the middle. It was clear that Korra had worked for weeks to make sure Asami would love it.
"Asami, you're the love of my life and the only person I'd ever want to be with. You've been my girlfriend for two years but I'd love to call you my wife, so Asami Sato will you marry me?"
Asami couldn't contain her tears of joy but after a few moments composed herself enough to give her answer.
"Of course I'll marry you." She quickly kissed her now fiancee before raising her hair as Korra fastened the necklace around her neck making it official before the two removed what clothes they had as they spent the entire night and most of the next day in bed.
When they finally returned to the city as a married couple they got a lot of questions from the press about their marriage. Most of the people didn't care that it was a girl on girl marriage but mostly that two important people were now off the market. And two years later when Asami and Korra were ready they went to the local orphanage and adopted a four-year old water tribe girl named Yin. So far the three of them have lived together in the Sato mansion content to let the world move on while they enjoyed the rest of their lives together.
I hope you've enjoyed the ending despite it being short. More Korrsami stories to come.