TsuStar

TsuStar is the het ship between Tsubaki Nakatsukasa and Black Star from the Soul Eater fandom.

Canon
Tsubaki and Black Star work together as partners, and are shown to have close relationship with each other. Tsubaki is stated to be basically the only weapon capable to be Black Star partner. This is thanks to her gentle soul wavelength, who can adapt to Black Star’s strong self centered soul. Tsubaki is always trying to get Black Star to act more seriously and focus on their missions. Despite his self-centered behavior, Black Star cares for Tsubaki and supports her when she needs him.

One of the best examples of this is when the two fight Tsubaki's brother Masamune. He respects her decision to fight her brother alone. During their fight, he supports her and cheers for her. He protects her body from the villagers' attack by taking everything upon himself. As Tsubaki doubts her ability during the fight, a vision of Black Star appears, encouraging her to keep fighting. After Tsubaki won, she thanked Black Star.

After Tsubaki absorbs her brother's ability, the two struggle to master the Uncanny Sword Mode. Tsubaki is afraid that Black Star, like her brother, will lose his way and take the path of Kishin. But she continues to support him, even if it puts his health at risk. When he decides to fight Kid, she lets him do it, knowing he needs it to measure his level of strength. She travels with him to her family in Japan so that he could master it there.

Fanon
TsuStar is one of the most popular ships within the Soul Eater fandom. The ship sailed due the fact that they are partners, their opposite personalities and their strong relationship. It is mostly shipped alongside SoMa, and occasionally, KidLiz. In AO3 the ship has +250 works, being the most popular ship for both characters and the 3rd most popular ship within the fandom.

Fandom
FAN FICTION