Shironami

Shironami is the femslash ship between Tsumugi Shirogane and Chiaki Nanami from the Danganronpa fandom.

Canon
Chiaki and Tsumugi have never talked to each other in canon, but they've had a short conversation within Ultimate Talent Development Plan.

When playing as Tsumugi, during the fall school festival, Tsumugi decides to exhibit all the cosplay she's made so far. If chosen, Tsumugi will welcome Chiaki to her cosplay exhibit. Chiaki states that she saw some video game character's outfits and came to look. Tsumugi then asks her if she ever wishes to become a video game character, to which Chiaki denies. Chiaki then goes on to compliment Tsumugi's cosplay, stating that "it feels like the character's have popped right out of the screen," to which Tsumugi blushes and thanks her.

The two have some interactions in Danganronpa S: Ultimate Summer Camp. In one, Tsumugi reacts with surprise upon learning that Chiaki has never entered any world championships in esports and encourages her to try competing in one. At the campfire, Chiaki takes inspiration from Tsumugi's story about cosplay to come up with a scary story about forgetting to save her progress in a video game.

Though very different in similarities, they are also pretty similar. Tsumugi is The Ultimate Cosplayer which she has mentioned she mostly cosplays famous anime characters and possibly famous video game characters as well. Chiaki is The Ultimate Gamer which could also be a talent involving the fandom. In Tsumugi's splash art, she is shown with a Hatsune Miku wig, as Miku is very similar to a video game character, Chiaki might have heard of her.

Fanon
The ship became popular due to the similarity of the girls' talents and how well they could mesh in a relationship. With Tsumugi as the Ultimate Cosplayer, and Chiaki as the Ultimate Gamer, it's easy for cute activities to take place like Tsumugi making cosplays of Chiaki's favourite video game characters for her. Their dynamic of Fandom Geek x Fandom Geek is also what drives this ship.

Despite all of this, Shironami is still considered a rarepair, and the two both have more popular ships, such as Shironaga, Shiromami, Kaemugi, Saimugi for Tsumugi, and Hinanami (AI), Komanami, Komahinanami, Soniaki, Nanamiki, and Kamunami for Chiaki respectively.

Fandom
FAN FICTION

Trivia

 * Both of them have talents relating to fandom.
 * Tsumugi cosplays as Chiaki during Chapter 6 of NDRV3.