The two never interact with one another, due to their early deaths. Sayaka was murdered in Chapter 1 while Chihiro was murdered in the following Chapter. One similarity the two share is both being the earliest victims in the killing game. The two share the same English voice actor, Dorothy Elias-Fahn.
They are seen seated near one another in Danganronpa: The Animation. When Chihiro began crying after believing no one would make out of the school alive, Sayaka seemed to be upset and worried for Chihiro. After Sayaka's body was found and Leon Kuwata was executed for her death, Chihiro is again seen crying on the floor because of both their deaths, and upset from the despair around him.
In Sayaka's relationship chart, Chihiro said "Woah, she's just like on television," While in Chihiro's chart, Sayaka states that she's jealous of Chihiro's petite build.
In one of the seasonal events in the Ultimate Talent Development Plan, after Monokuma launched the 1,000 balls, they appear worried for each other and try to escape together.
The pair is largely unknown to fans due to both having no interactions, being killed off early on, and because fans do not pay a lot of attention to both characters, mainly Sayaka, since she's one of the most hated characters in the first game. They are overshadowed by both character's more popular ships (Leosaya and Naezono for Sayaka, and Chimondo for Chihiro).
There is little fan art of the two together, although, there are a few pages on Danganronpa Amino dedicated to the pair, where people enjoy art of the two and make headcanons.
- Class 78th refers to the ship between the two and the other students of Class 78th.
- Leochizono refers to the ship between the two and Leon Kuwata.