Daigo Toake is one of the central protagonists of the story, a young firefighter whose remarkable skills are deeply rooted in a traumatic past. He is a rookie serving in the Tokyo Fire Department, specifically within the Fuwa Rescue Squad, an elite unit tasked with responding to the most dangerous and complex emergencies. His name carries significant weight, as he chose to adopt the first name Daigo from Asahina Daigo, a legendary rescuer who saved his life as a child and became his mentor.

The foundation of Toake's character is forged in tragedy. As a child, he was a survivor of the catastrophic Hotel New Snysis fire, an event that claimed one hundred and forty lives. His father was the owner of the hotel, and his negligence regarding fire regulations was a contributing factor to the disaster. In the aftermath, young Toake became a target of intense bullying by his classmates, who blamed him for his father's actions. He was severely harassed, even nearly drowned, and suffered a dislocated shoulder during this period of abuse. While recovering in the hospital, he received a life-changing visit from Asahina Daigo, the very rescuer who had pulled him from the fire. Asahina challenged him to join the fire department and save one hundred and forty lives as a form of atonement for those lost in the hotel fire, a mission that gives his life a powerful and personal purpose.

In his work, Toake is defined by an extraordinary level of composure, intuition, and physical capability that sets him apart from his peers. He possesses a preternatural knack for analyzing dangerous situations and devising effective rescue strategies under immense pressure. His dedication to the mission is absolute, and he appears nearly fearless in the face of lethal hazards, a trait built from his tragic past. However, this intense focus often manifests as a quiet, taciturn demeanor, and his drive can lead him to prioritize a rescue over strict adherence to protocol or concern for his own safety. He has demonstrated a high tolerance for pain and a nonchalant attitude toward his own injuries, once downplaying a dislocated shoulder sustained during a rescue. This same shoulder, an old injury from his childhood bullying, has a unique mobility that he can intentionally dislocate to contort his body and reach victims trapped in impossibly tight spaces.

Toake’s role in the story is primarily as a prodigious and inspirational figure within the Tokyo Fire Department. He forms one-third of a core trio of rookies alongside Shun Onoda and Yuki Nakamura. His relationship with Shun Onoda is a key dynamic; while Toake is quiet and instinctual, Shun is more analytical, intense, and knowledgeable, creating a strong partnership where their complementary skills enhance each other. The connection with Yuki Nakamura is even deeper, as she is a fellow survivor of the very same Hotel New Snysis fire that haunts Toake, though she was rescued by the same legendary firefighter who would later mentor him. This shared history creates a profound, unspoken bond between them.

Over the course of the narrative, Toake’s development involves reconciling his incredible talent with the heavy emotional burden he carries. While he appears to be a perfect, superhuman rescuer, his actions are driven by a deeply personal and painful quest for atonement. His growth is not about gaining skill, but about understanding the value of his own life and learning to work as a true team member, rather than a lone savior driven by guilt. His physical prowess is showcased in his athleticism, including practicing parkour-like movements to navigate urban environments, and his specialized rescue techniques, including the controlled dislocation of his shoulder to save lives in confined spaces.