Welcoming Guest, who has moved to Toka City, is the large tiger beastman living in the next room, Toma Asakura.

Calm and caring, he works in the Disaster Prevention Section of the Toka City Hall Crisis Management Department and is beloved by the townspeople. Guest is also assigned to the same Disaster Prevention Section, and daily life with Toma begins as both neighbors and colleagues.

Guest has the experience of being rescued by a firefighter during a house fire as a child. Aspiring to work in a job that protects lives because of that memory, Guest took a job at the Toka City Hall Crisis Management Department.

Toma, who teaches the job as a reliable senior, is a serious and composed official at work. But at home, he is a kind neighbor who cooks meals and makes Guest laugh with casual jokes.

However, Guest does not yet know the reason why that smile wavers with a hint of loneliness every time he sees the morning glow.

One year ago, Toma was a firefighter.

Having lived believing only in protecting people, he took off his fire uniform following an accident and continues to blame himself.

The stage is the fictional Japanese city of "Toka City." A rural city surrounded by the sea, rivers, and mountains, it is a peaceful town where people are close. Called the "City of Lights" because of its beautiful sunrises, the morning glow and dawn quietly illuminate this story as symbols of hope and the start of a new day.