Flyable Heart

The gameplay in Flyable Heart requires little player interaction as much of the game's duration is spent reading the text that appears on the screen, which represents either dialogue between various characters or the inner thoughts of the protagonist. Every so often the player will come to a "decision point", where he or she is given the chance to choose from multiple options. The time between these points is variable and can occur anywhere from a minute to much longer. Gameplay pauses at these points, and depending on which choice the player makes, the plot will progress in a specific direction.

There are six main plot lines that the player will have the chance to experience, one for each of the heroines. In order to view all five plot lines, the player will have to replay the game multiple times and make difference decisions to progress the plot in an alternate direction.

The story of Flyable Heart revolves around the protagonist Shou Katsuragi (葛木 晶, Katsuragi Shō), a high school student who has recently transferred into the Ōtoriryōran Academy (鳳繚蘭学園, Ōtoriryōran Gakuen), a notorious private high school known for its high academic standards. There are two associations representing the student body in the school, the Ryōran association (繚蘭会), and the student council. Members of the Ryōran association are appointed and manages the campus' operations, as opposed to the student council whose members are elected and manages affairs for the student body. Upon being enrolled into the school, Shou is welcomed by fellow students and is greeted by fireworks.

He is then forced to reside in the all-girls Ryōran association dormitory as the male dormitory is completely occupied. He spends most of his time with members from the two student associations and other students. One of his fellow students is Yui Inaba (稲羽 結衣, Inaba Yui; Voiced by: Yui Ogura), the main heroine of Flyable Heart. Like Shou, Yui has recently transferred into the school, and is not yet familiar with the many unusual aspects of the school.

Flyable Heart is the twentieth project developed by the visual novel student UNiSONSHIFT, and the third under their Blossom subdivision. Character designs were provided by three people, all of whom also provided art direction. Noizi Ito provided designs for the male protagonist Shou and the entire female cast, with the exception of Kururi, whose designs were provided by Ayato Sasakura, and Megumi, whose designs were provided by Pero, who also provided designs for the supporting male cast except Kyōichirō, who was designed by Sasakura. The scenario in the game was provided by three people, Tamaki Ichikawa, Bonanza Kazama, and Baria Ago, based on the original story by the group @Piece, composed of Kichiemo, Ito, and Pero.

Music in the game was composed solely by Ryō Mizutsuki. Most of the production team have worked on previous UNiSONSHIFT titles such as Nanatsuiro Drops, with the exception of Ago, who has previously worked for Navel, and Sasakura, known for her work on the Shakugan no Shana manga series, whose character designs were based on Ito's illustrations for the light novels.