Celesgiri

Celesgiri is the femslash ship between Kyoko Kirigiri and Celestia Ludenberg from the Danganronpa fandom.

Canon
There is very little interaction between the two in canon. After losing the third Class Trial, Celestia handles Kyoko a key to the locker where Alter Ego was hidden after Celestia had stolen it.

Both were stoic girls who adapted to their new environment and Monokuma's rules quickly. However, it's later revealed that Celestia is not so stoic after all and was only pretending to be calm about their current situation.

Fanon
While canonically the relationship of these two is a bit unclear, Celesgiri became one of the most popular femslash ships from the Danganronpa fandom. Kyouko and Celestia are often shonw by the fans as having a crush on each other, although in the original story they barely talked.

Part of the reason why they're shipped together is that both are mysterious and stoic girls. A fan series, Danganronpa Abridged Thing, also played a role, with Celestia claiming Kyoko is the only person she relates to and loves how cynical and "done with everyone's shit" she is. It further fueled the ship, even though Kyoko didn't seem to return Celestia's feelings.

Fandom
AO3