Future Diary Codexery

Reanna Rolise

A child whose only weapon is the universe quietly whispering 'you'll be fine.'

Reanna Rolise is the 12th Diary Holder in the survival game orchestrated by Deu ex Machina, wielding the Lucky Diary. She is a young, foreign-born girl whose presence in the game introduces a striking contrast to the otherwise dark and scheming cast of participants. Where most holders rely on manipulation, violence, or information warfare, Reanna's power is one of passive fortune—events simply bend in her favor without her needing to scheme or fight.

Her role in the broader narrative is that of an innocent thread woven into a web of malice. She represents the cruelty of the game itself: a child thrust into a deadly contest where survival is measured in blood, her only advantage being that the universe seems to nudge outcomes toward her safety. Fans often note that her existence underscores how Deu ex Machina's game preys on the vulnerable as readily as it does the ruthless.

Quick Facts

Role
12th Diary Holder
Diary type
Lucky Diary
Affiliation
Independent Diary Holder
First appears
Later portion of the survival game
Species
Human (child)

Lore & Background

Reanna Rolise is a young girl of foreign origin who enters the survival game as the 12th participant. Her Lucky Diary does not display predictions, grant superhuman abilities, or provide tactical information. Instead, it passively tilts probability in her favor: bullets miss by a hair, doors open at the right moment, allies stumble into her path, and catastrophic coincidences resolve in her benefit. The diary's power is subtle and cumulative, making her a surprisingly durable target despite her youth and lack of combat experience.

Her personality is marked by a childlike openness and a certain bewildered calm in the face of horror. She does not scheme, does not monologue, and does not seek to dominate. This makes her both sympathetic and, in the eyes of other holders, an easy mark—until they discover that 'easy mark' and 'lucky target' are not the same thing. Several holders who attempt to take her out find their plans unraveling through a cascade of improbable failures, reinforcing the diary's passive but relentless nature.

Within the wider cast, Reanna functions as a narrative counterweight. In a story saturated with obsession, violence, and psychological torment, her presence reminds the audience of what the game destroys: ordinary childhood, trust, and the simple expectation that the world will not kill you. Her interactions with other holders—whether brief or extended—often highlight the moral gulf between those who play for survival and those who are simply caught in the machinery.

Reader's Guide

Name: Reanna Rolise. Diary: Lucky Diary (12th Holder). Core personality: childlike, open, unguarded; she experiences the horror of the game with wide-eyed bewilderment rather than cold calculation. Key relationships: she is largely independent in the cast, though her interactions with other holders—particularly those who target her—define her limited arc. Her strategy is essentially non-strategy: she does not plan ambushes or gather intelligence. The Lucky Diary handles survival for her, turning would-be fatal encounters into near-misses and fortunate escapes. Pivotal moments center on holders attempting to eliminate her and failing through cascading bad luck, which cements her reputation as an untouchable target. Her story is relatively short compared to the central cast; she exists to demonstrate the game's indiscriminate cruelty and to provide a brief, poignant contrast to the obsession-driven narratives of Yuno, Akane, and the others. Her ending is resolved in the final phase of the game, and she is among those whose fate is determined by the game's conclusion rather than by her own agency. Adaptation note: the light novel and anime present her with broadly consistent characterization, though the anime compresses some of the mid-game holder interactions, giving her slightly fewer on-screen moments than the novel's text allows.

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