Reijirou Otogami

Reijirou initially presents himself as aggressive, dismissive, and openly contemptuous of mediocre pianists. He repeats Gakuon's belief that sounds made by ordinary people do not qualify as music and directs that attitude toward Lucky when the brothers meet again.

His hostility conceals considerable loneliness. Reijirou was emotionally dependent on Lucky during childhood, following him closely and valuing their time together. The loss of that relationship affects the way he interacts with other people and helps explain the gap between his intimidating public persona and his actual wishes.

Reijirou is also sensitive to friendship despite trying to suppress that side of himself. His experiences with Saiba Rindo demonstrate that he is capable of valuing companionship more than victory, even when doing so conflicts with the standards imposed by his father.

Reijirou is a piano prodigy specializing in extraordinary volume. His performances are powerful enough to create an overwhelming physical impression on listeners, earning him the reputation associated with "roaring" sound.

His characteristic fantasy is the Sunset Giant, a gigantic figure experienced by listeners through his playing. Like the fantasies associated with the other Otogami prodigies, it communicates something personal about Reijirou rather than functioning merely as a visual embellishment.

His natural Otogami ability also gives him exceptional command of compositions. Technique that would require intensive conscious analysis from an ordinary pianist can come naturally to him, allowing his emotional and imaginative qualities to dominate his performances.

Reijirou is the first of Lucky's famous siblings to become the focus of his attempt to reunite the family through piano. Their meeting establishes how dramatically the siblings have changed since being separated.

Reijirou's hostility is revealed to conceal his wish to return home with friends. His earlier friendship with Saiba had ended painfully after Reijirou deliberately made a mistake in a competition so Saiba could win, an action Gakuon considered unacceptable.

Lucky eventually recognizes the wish behind Reijirou's behavior and uses his own performance to create an experience of going home together. Reaching Reijirou emotionally allows the brothers to begin reconnecting rather than settling their conflict solely through technical competition.

Reijirou subsequently becomes more supportive of Lucky's effort to reconnect with their siblings. His development establishes an important precedent: the celebrated Otogami pianists have personal desires and insecurities that their public identities as geniuses do not reveal.

Lucky Sonoda is Reijirou's brother and was one of the people closest to him during childhood. Reijirou's hostility after their reunion masks his desire to recover the companionship he lost, and Lucky eventually reaches him by understanding that wish.

Gakuon Otogami is Reijirou's father and musical authority. Reijirou internalizes much of Gakuon Otogami's contempt for mediocrity, although his decision to prioritize Saiba over winning demonstrates that his own values do not completely match his father's.

Chocho Sonoda is Reijirou's mother, from whom he is separated when the Otogami family divides.

Saiba Rindo becomes Reijirou's friend after the family leaves Japan. Reijirou deliberately loses to Saiba because he values their friendship, but the resulting circumstances contribute to their separation and Reijirou's later emotional isolation.

Don Otogami, Mimin Otogami, Fanta Otogami, Sorachika Otogami, and Sikato Otogami are Reijirou's fellow septuplets and share the exceptional musical upbringing imposed by their father.