She can bond with the protagonist Hajime Hinata in both social life gameplay and the main storyline before her true persona is revealed as the artificial intelligence observer daughter of Chihiro Fujisaki, and the younger sister of Alter Ego and Usami / Monomi.
In contrast to Kyoko Kirigiri from the first Danganronpa video game whose main goal was assisting the player character Makoto Naegi in investigating the killing cases, Kazutaka Kodaka created Chiaki to be more of a heroine who would bond with Hajime Hinata.
[8] Shortly after the death of the Ultimate Gamer in the anime series, the artificial intelligence Chiaki makes an appearance reenacting the first scenes of Goodbye Despair.
Initially presenting as a sleepy, laid-back student who is inexperienced in the ways of the world but very skilled at video games,[12] she becomes a central figure of the class trials along with Hajime Hinata, most notably the second one when she assists him in connecting a murder case with the video game Twilight Syndrome, which robotic bear Monokuma had offered the students to play to understand how the culprit and victims were related.
However, a remnant of her consciousness remains intact long enough to allow her to help Hajime during his final conflict with the AI of Junko Enoshima controlling Monokuma (whom he had inserted into the programme before being memory-wiped) who threatens the surviving students with either sealing them forever in the islands or turning them into her replicas.
[15] Chiaki appears in the sixth and final chapter of Danganronpa V3: Killing Harmony as a persona adopted by the new mastermind, the Danganronpa V3: Killing Harmony reality television showrunner, alongside those of the cast of Trigger Happy Havoc and Goodbye Despair, as well as a part of the game's post story content mode, the "Ultimate Talent Development Plan", in which the player can interact with the entire cast from the franchise; Chiaki's individual storyline referencing her connection to Chihiro.
Comic Book Resources regarded Chiaki as one of the best characters from Goodbye Despair due to how she shows off her gaming skills and the growing relationship between her and Hajime after they met on the island.
[24] The Gamer listed her as the fifth best Danganronpa character based on her calm personality and "selfless" heroic actions in Goodbye Despair due to how she aids Hajime and the rest of her friends to leave the virtual world.
He added "To know that she was always the hope and that she was developed specifically to lead the cast of Danganronpa 2 to fight against Junko makes it even more of a bitter ending for our beloved gamer girl.
"[27] Koi-Nya referred to Chiaki as one of the best Danganronpa 2 characters based on hear traits and important actions in the narrative, most notably her assistance in the fight against Junko's AI.
[37] James Beckett from Anime News Network praised Christine Marie Cabanos's work as Chiaki for providing a good performance especially in the late episodes during a sad scene.