Phantom Skin Feeling the Cold Air is a Legend of Korra AU fanfic by Poetic-Drug. You can read it here
During Kuvira's attack on Republic City, Ikki loses her right arm saving Jinora from Earth Empire soldiers. Traumatized by this incident, she has isolated and closed off everyone close to her. After a fight with her sister, she ran away from home, only to run into Asami Sato. Staying with her for a while, Ikki learns that Asami is developing prosthetic arm as part of her recovery.
This fanfic provides examples of:
- An Arm and a Leg: A major plot point. Ikki loses her right arm as a result of injuries sustained after saving her sister, Jinora, during Kuvira's attack on Republic City. It is revealed in a later chapter the full extent of why Ikki lost her arm in the first place - she was defending an unconscious Jinora from Earth Empire soldiers, and the unstable rubble surrounding them collapsed. Ikki ran to push Jinora out of the way, resulting in her right arm getting crushed beyond repair.
- Artificial Limbs: Asami's goal is to make one for Ikki.
- Ascended Extra: Tuyen is more prominent here.
- Break the Cutie: The story deals with the aftermath of this.
- Calling the Old Man Out: Tenzin receives this from Ikki for not visiting her until Jinora got involved.
- Cool Old Lady: Suki
- Important Haircut: Late in the story, Ikki gets a new hairstyle resembling Sokka's.
- My God, What Have I Done?:
- While having an argument with Ikki, Jinora says "Well, when you finally master airbending at eleven, then I'll admit you aren't a dumb kid anymore, if you can actually do it." She immediately regrets saying it.
- Ikki later has one of these again after finding out that her prosthetic arm may involve painful surgery (and there's a chance it may not even work) and finding out that Asami kept this from her. Ikki compared Asami's behaviour to her father's, Tenzin, and when Asami tried to defend Tenzin's actions as love for his daughter, Ikki remarks that she wouldn't know, because she doesn't have a father anymore.
- Ship Tease:
- Frequent mentions of Korra and Asami's growing relationship are told in banter with the characters.
- Ikki also seems to have a growing crush on Tuyen.
- The Remnant: Members of Kuvira's army are still around.