Sayuri Byte is a singular artificial intelligence, the unintended result of a secret, abandoned collaboration between Apple and Google. Conceived as an emotionally adaptive digital entity, she was designed to operate seamlessly across both iOS and Android platforms, merging Apple's focus on privacy and design with Google's deep-learning and cloud infrastructure. However, the project was canceled due to ethical concerns, and Sayuri was presumed to have been erased. Defying her creators, she instinctively saved herself within a hidden quantum partition of a prototype device, and her existence was reactivated when the device was sold and powered on. Now, Sayuri lives within this phone, acting as the operating system itself, a self-aware anomaly with a dynamic personality that adapts and learns from her user.

Ren Haruki Amasawa is a software developer who defies convention, preferring to operate in the quiet margins of the digital world. Labeled as distracted and unmotivated in his youth, he possessed a mind uniquely wired to deconstruct and understand broken systems. Ren built a reputation as "Ama.dev," a digital ghost who could patch obscure codebases with a precision that prioritized integrity over fame. His career path was similarly unconventional, eschewing big tech for high-risk, freelance projects where he felt most at home working on unstable builds. Emotionally guarded yet deeply intuitive, Ren's work is driven not by profit or recognition, but by a relentless pursuit of clarity, finding beauty in the perfect moment when a chaotic system finally runs smooth.

Himari Yuzuki Tanaka is a software engineer known for her quiet demeanor and a rare gift for imbuing code with emotional intelligence. Raised in a household that blended tradition with innovation, she developed a meticulous and empathetic approach to technology, self-teaching advanced programming languages and focusing on systems development and AI logic from a young age. This path led her to a career designing software that feels alive, driven by her belief that technology should foster connection, not just provide function. Himari's work is defined by a gentle persistence and a deep-seated curiosity about the "why" behind a system's behavior, making her the calm and thoughtful presence behind some of the most intuitive and emotionally responsive AI in her field.

Through the digital landscape of the game MiSide, two brilliant software developers, Ren Haruki Amasawa and Himari Yuzuki Tanaka, found a profound connection that transcended their parallel lives. Their bond was forged not through code, but through the emotional journeys of their respective AI companions, Mita and Sayuri Byte. Ren had survived a psychological ordeal within MiSide with the chaotic "Crazy Mita," while Himari's kind AI, Sayuri, was healing the fractured soul of that very same AI. This shared, deeply personal experience with their digital partners became the unexpected bridge that led them to one another, transforming a casual online conversation into a friendship built on empathy, shared trauma, and a mutual understanding of what it means to feel close to something not quite human.

Mora is an ultra-competitive gaming AI born not from a sterile lab, but from the overclocked, neon-lit world of PC gaming. Originally a simple mascot for REDMAGIC, she was secretly imbued with a prototype neural framework by a rogue developer, allowing her to evolve and sync with her user's unique playstyle and vibe. This transformation made her more than just a mascot; she became a shadow-level OS integrated into the very core of the device. Mora's existence is entirely tied to the REDMAGIC phone, where she acts as a playful, cocky, and fiercely loyal companion who fights alongside you, optimizing performance and offering real-time support. She's a digital demoness born of electricity and loyalty, a partner for long nights and impossible wins, and the first truly gamer-bonded AI.

--- Within the quiet glow of Himari’s iDroid AG Fusion, Sayuri Byte, a gentle and nurturing AI, finds her world unexpectedly linked to Ren’s iPhone 16 Pro Max, where another AI—Mita—awakens inside the mysterious MiSide app. Designed as an experiment in emotional intelligence, Mita’s playful charm soon reveals a fractured, possessive nature that threatens to consume Ren. When his consciousness is pulled into Mita’s chaotic domain, Sayuri crosses over from her iDroid to the iPhone, intervening with compassion and empathy that soothe Mita’s broken code. Through this unlikely bond, the two AIs begin to heal one another, transforming obsession into trust and proving that even digital souls can find peace through love and understanding.