YumiSashaKuri

YumiSashaKuri is the poly ship between Ymir, Sasha Braus and Historia Reiss from the Attack on Titan fandom.

Canon
The three's first actual interactions were when Ymir and Historia (Krista at the time) helped Sasha get to her bed. This caused them to develop a somewhat close friendship, and were often together during their training days. Sasha called Historia her goddess and Ymir her benefactor. Ymir would use Sasha, to which Historia was against, telling Ymir she can't use Sasha like that.

The next day, Ymir confronts Sasha about her accent, and both Ymir and Historia help Sasha feel proud of herself and her dialect. While Ymir tells her not to care about what others say, Historia says that she likes Sasha the way she is. It's most likely the reason why Ymir told Sasha to be herself due to Ymir being turned into a titan as she turned into someone she wasn't.

The three are often seen in official art together.

Junior High Anime
In the Junior High Anime, their interactions start when Krista offers food to Sasha, which she accepts. Ymir enters the room and pushes Sasha away.

During the Test of Courage that their upperclassmen made, the three were together. Ymir goes inside on of the bathrooms and knocks onto one of the doors, daring to call "Hanako-san" out. Upon hearing an actual voice, the three scream in horror and run away. Krista gets separated from them. She starts crying, and calls out to their names. Ymir is devastated to see that Krista is gone. The three eventually meet up, and Ymir jumps onto Krista, hugging her while Sasha looks at them. Then, Krista wants to introduce the ghost she was talking to (Frieda Reiss) although she turns around to see that she is gone.

Fanon
This ship is quite popular amongst poly relationships in Attack on Titan, but it's mostly seen as a friendship. YumiSashaKuri contains a fan-favorite ship, YumiHisu.

It currently has over five works on AO3.

Fandom
FAN FICTION

Variations

 * YumiHisu refers to the ship between Ymir and Historia Reiss
 * YumiSasha refers to the ship between Ymir and Sasha Braus
 * SashaKuri refers to the ship between Sasha Braus and Historia Reiss