Tōru Kishiri is a Fire Soldier in Special Fire Force Company 5, recognized by his short, shaggy blonde hair with face-framing bangs and his constant habit of chewing or blowing bubblegum, which sometimes bursts comically on his face. He wears protective bunker gear marked with blue lines and prominent "5" patches, along with a black uniform and cross-insignia hat during official duties. Characterized by rudeness and carelessness, Kishiri often speaks without thinking, leading to arguments or fights. He displays sarcasm, arrogance about his pyrokinetic powers, and dismissiveness towards non-powered individuals like Akitaru Ōbi. His primary motivation for joining the Special Fire Force was gaining popularity, especially with girls. Despite his brashness, he shows unwavering loyalty to Company 5's leader, Princess Hibana, occasionally manifesting as jealousy when she focuses on others like Shinra Kusakabe. A Third Generation pyrokinetic, Kishiri wields the ignition ability "Backdraft Bubblish Gum," creating explosions by filling bubblegum balloons with flammable gas. He strategically deploys these bubbles in combat, using environmental factors like vacuums to amplify their force and demonstrating tactical resourcefulness in positioning during battles. His involvement begins during the clash between Companies 8 and 5, where he shoves a bystander and insults Ōbi, provoking Shinra and Arthur Boyle into a fight halted by Maki Oze's corkscrew punch. Later, during Company 8's infiltration of Company 5 headquarters, he attempts to repel Maki and Takehisa Hinawa but is defeated by Hinawa's bullet-ricocheting technique. Following a truce between Companies 5 and 8, Kishiri participates in joint operations. He accompanies Company 8 to Company 1's training grounds, where Huo Yan Li refuses to fight him. He later assists in a distraction to help Shinra and Arthur search Karim Flam's room, fleeing when compromised. During the Fifth Pillar arc, he and Takeru Noto rescue Shinra from White-Clad cultists using a coordinated attack—combining his explosive gum bubbles with Takeru's missiles to bombard the enemy, enabling Shinra to pursue Inca. He continues collaborating with Company 8 during major Infernal outbreaks, arriving alongside Lieutenant Karim Flam and Juggernaut to immobilize Infernals and combat the White-Clad, showing increased integration into cooperative firefighting efforts.