Kazuki Doumoto

Kazuki is confident, accomplished, and demanding about music. Decades as a successful pianist have given him a strong artistic identity and considerable influence within the classical-music world.

His decision to leave the piano for the organ demonstrates his willingness to change direction despite his established reputation. That decision also affects people whose careers have long been connected to his piano playing.

Kazuki remains focused on completing the new concert hall and presenting its opening performance even as disturbing incidents occur around the musicians.

Kazuki is an internationally respected musician with professional-level mastery of both piano and pipe organ.

He is also a composer and possesses the theoretical knowledge required to arrange and direct sophisticated classical performances. His understanding of musical acoustics is particularly relevant to a purpose-built concert venue.

The shift from piano to organ demonstrates substantial versatility rather than a simple change of instrument.

Kazuki prepares for the inaugural concert at Domoto Concert Hall when musicians connected to the project begin suffering apparently coordinated attacks.

Because several victims and suspects have professional connections to him, Kazuki's career history becomes essential to understanding the motive behind the incidents.

The investigation reveals that Kazuki's decision to stop playing piano effectively ended Fuwa's longtime role as his personal tuner. Fuwa's resentment, combined with his belief that Kazuki had lost the sensitivity necessary to recognize Fuwa's tuning, contributes to the conflict behind the attacks.

Genya Doumoto is Kazuki's only son and a professional pianist.

Takumi Fuwa is Kazuki's longtime friend and former personal piano tuner. Kazuki's decision to abandon the piano becomes a major source of Fuwa's resentment.

Rara Chigusa, Shion Yamane, and Reiko Akiba are musicians selected for the opening concert at Kazuki's new hall.

Conan Edogawa investigates the attacks surrounding Kazuki's concert and professional circle.