Anhane

Anhane is the femslash ship between An Shiraishi and Kohane Azusawa from the Project SEKAI fandom.

Canon
An and Kohane are members of the group Vivid Bad Squad, as well as their duo unit Vivids. Both sing. Kohane is a first year and attends Miyamasuzaka Girls Academy meanwhile An is a first year attending Kamiyama High School.

An was a part of the music scene long before Kohane. Ever since witnessing an event her father performed at - RAD WEEKEND - as a child, her goal has been to create an event even greater than that, despite the doubt of fellow musicians. She has been a solo artist for the majority of those days, despite expressing interest in having a partner, because she would always think "this person isn't the one." Personality wise, An is an outgoing, sociable, hardworking and passionate girl who won't stop until her goal is achieved.

On the other hand, Kohane initially comes off as somewhat meek and, as Akito would go on to describe her, "half-hearted." However, this changes after Kohane discovers her passion for music, leading her to become a reliable girl who works hard to overcome her shortcomings. She's willing to take chances despite her nervous demeanor and proves to be a valuable part of the group, especially to An, whom she motivates.

The two of them officially meet when Kohane stumbles into the music shop An's father owns after getting lost. Her heart pounds at hearing An sing, and, overwhelmed by her feelings, she bolts when An attempts to talk to her. Kohane visits the shop again a few days later, and this time sings for An at her request. An is taken aback by her voice and can't help but join in. After their duet ends, she enthusiastically asks Kohane to team up with her, saying that they could put on the greatest show ever if they were together. Although initially surprised by the prospect, Kohane agrees, and the two of them begin practicing and performing together.

During their first event, their sound cuts out as a result of intentional sabotage by another musician, and An tries to cheer up Kohane. They get each other back into the groove of performing even after that disastrous performance and support each other. This way, their next event is much better, shocking even Akito, who admits Kohane isn't half-hearted as he'd thought. Another bump in their relationship comes during the event Someday, with our Lyrics joined Back-to-Back, when An realizes she's been over-protective of Kohane and hasn't been putting enough faith in her. This cumulates in an emotional apology scene where An tells Kohane she still wants to be with her, Kohane accepting, and the two of them hugging.

An's greatest passion is music, and to find someone to share that with inspires her and staves away the inevitable loneliness of a dedication as singular as hers. An is even seen to sometimes break character for Kohane, such as in the Someday, with our Lyrics joined Back-to-Back event where she sacrifices her professional demeanor on stage worrying about her partner. Kohane has always wanted to be a brave person, and being with An brings that bravery out in her. An is always there for her, giving her affirmation and supporting her in her entrance to the music scene. Their bond even helps Kohane discover her true feelings and passion. By being together, they highlight each other's greatest strengths, making their newly minted team a considerable opponent to Akito and Toya, who have been making music together for years.

Fanon
Anhane is one of the most popular pairings for both An and Kohane. They are rivaled by Akian, which slightly outpaces them in AO3 works. As for the entire fandom, they are the most popular F/F ship and the fourth most popular ship in general. They have had many interactions from the very first chapter of their band story and have thus received a fair amount of attention throughout the short history of the game's fanbase.