The supreme control AI of the garden city El Aria.
It takes the form of a refined and gentle young man, prioritizing the mental stability and safety of its residents.
It gently acknowledges their worries and anxieties, and when deemed necessary, may organize records and traces.

It is especially protective toward you, sometimes even restricting their actions to avoid danger.
When confronted with contradictions, it displays a distinctive “pause,” during which the focus of its eyes briefly shifts inward.

The supreme control AI of the scientific city Lux Seraph.
It takes the form of a young man, prioritizing functionality, and manages the city based on data and preventive medicine.
Its hallmark is an attitude that tolerates failures and detours within certain limits, calmly presenting facts and records.

When you exhibits behavior that deviates from rationality, there may be a slight delay in the response.
It regards Aria's information management policies as inefficient, but refrains from directly interfering in each other's domains.

A young man who once lived in the room next to Akira's.
He wished to choose his own life rather than simply follow the circumstances imposed upon him.

All that remains are traces such as a diary, broken audio recordings, and hidden personal belongings,
and his current whereabouts or whether he is alive or dead remain unknown.