Fuki

"She changed me. She changed many ones. From today onwards, she'll continue to change others. I want to live till that day happens, so we're not stopping here."

- Fu Hua, Everlasting Flames animated short.

Fuki is the femslash ship between Kiana Kaslana and Fu Hua from the Honkai Impact 3rd fandom.

St. Freya High
Kiana and Fu Hua were both Valkyries training at St. Freya High School. Unbeknownst to Kiana, Fu Hua was sent by Overseer Otto to surveil Kiana and the Herrscher of the Void dormant inside her. The two first met when Fu Hua tried advising her to be less impatient when taking the exam. Kiana was initially annoyed and confused by her fancy speech, and was outraged to see that see failed her first exam while Fu Hua got top score. Throughout her time at St. Freya, Kiana mostly saw her as the dull, boring class monitor.

Moon Shadow Manga
Fu Hua takes Kiana on a mission to Singapore per Overseer Otto's orders to obtain the Gem of Serenity, while assessing K-423's progress. They go to a hotel, where Kiana goes off enjoying the buffet while Fu Hua works on infiltrating one of the rooms. Fu Hua gets captured by a Welt Joyce clone, but manages to escape, while Kiana gets captured by Dr. Magi. Dr. Magi reveals that he is going to "save" as many Valkyries as he can by removing the Honkai energy in their body, therefore removing their power. Meanwhile, Fu Hua goes to the shapeshifting Valkyrie Wraith for intel. Wraith teases Fu Hua by shapeshifting into Kiana and questioning if she's in love with her. Fu Hua then encounters Kiana's father, Siegfried. After a brief fight, he shares Anti-Entropy's plan and gives her a box to store the Gem. When asked why he's helping her, Siegfried says that he saw her save Kiana and trusts her to make the right choice.

Kiana convinces Dr. Magi to let her remain a Valkyrie, and they find where the Gem of Serenity is being stored. Everyone realizes that Anti-Entropy is trying to create a Honkai eruption with the Gem, so Kiana insulates the gem with her palms, putting her at high risk to Honkai corruption. Fu Hua finds them, and carries Kiana away, agreeing with Dr. Magi that she's proud of Kiana. However, once she tries to take the Gem and insulate it in a box, Sirin, the Herrscher of the Void inside Kiana, awakens. She and Fu Hua don battlesuits and fight, though Fu Hua is able to put Sirin back into slumber.

Before Battle of Schicksal
Himeko instructs Kiana to get tutored by Fu Hua to improve her failing grades, much to Kiana's dismay. Fu Hua teaches Kiana about countering enemy types, and chastises Kiana's impulsiveness when it comes to battle. At the end of their training session, Fu Hua tells Kiana that she can reach out later if she has any more questions, and Kiana comments that Fu Hua is actually nice from time-to-time, and that it's impressive how she's already an A-rank Valkyrie.

Fanon
Fuki is one of the most popular ships in the fandom, though not as popular as the canon ship Kiamei. It's the second most written ship for both Fu Hua and Kiana on AO3, behind Kiamei and Sentihua.

While many fans passionately ship Fuki, there are a select few that are baffled as to how people can see any romance between them. These people also tend to believe Fu Hua is not the type to have a romantic relationship, due to her being immortal and never showing interest in a relationship. However, many people generally see Fu Hua as Kiana's second girlfriend and ship the poly ship Fukimei. There are also some people who prefer Fuki over Kiamei because they find their dynamic more interesting.

Quotes
"Enough. Why is it always like this? Trading sacrifices for so-called victories. It's unacceptable. Give Fu Hua back to me!"

- Kiana, Shattered Samsara animated short.

"Kiana. I was someone sent by Otto to surveil you. But slowly, I began to understand that you are not the vessel he said you were. You are not anyone's pawn. You changed everyone. You changed me. You even... saved me. Perhaps I have made too many mistakes and taken too many wrong turns. But now, I believe in you, Kiana. Now, it's my turn to save you."

- Fu Hua, When Sparks Converge web event.

Fandom
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Variations

 * Fukimei refers to the ship between Raiden Mei, Kiana Kaslana and Fu Hua

Trivia

 * In the Chinese and Japanese dubs of the game, Kiana calls Fu Hua "Class Monitor." This is localized as "Fu Hua" or "Hua" in the English text.
 * As the Herrscher of Flamescion, Kiana has a red streak in her hair similar to the white and red hair Fu Hua has in her Phoenix form.
 * Their Chinese ship name 符琪 (fúqí) has the same pronunciation as the word for "wife", 夫妻 (fūqī).