Tōru Kirishima is the wakagashira (first lieutenant) of the Sakuragi Family yakuza organization. Aged 28 with a November 18th birthday, he stands 183 centimeters tall with blood type B. His appearance features midnight blue hair pulled back with strands framing his face, grey eyes, and frequent square-rimmed blue sunglasses. His typical attire includes an off-white button-up dress shirt, black pants, a black belt, dress shoes, and visible chain tattoos on both wrists. Infamously known as "The Devil of Sakuragi" or "Sakuragi's Demon," this reputation stems from his brutal, ruthless methods against enemies, instinctively resorting to violence. He chain-smokes when disturbed or overthinking. He also struggles to memorize names and faces, often mixing them up. Despite this fearsome exterior, he possesses a gentle, sensitive interior, accepting others without judgment and showing compassion, especially toward those he cares about. His personality aligns with the ISFP (Adventurer) type, marked by a vibrant inner life, creativity, and emotional sensitivity—traits he rarely acknowledges. Orphaned before the series begins, his childhood involved a close relationship with his mother, though details are sparse. As a high school delinquent, he was notorious for frequent fights and violent tendencies, as noted by former classmates. He joined the Sakuragi Family under Kazuhiko Sakuragi's mentorship, rising to wakagashira after the departure of Tōichirō Aoi. His promotion followed a rumored incident where he single-handedly dismantled an opposing yakuza family, cementing his demonic nickname. A pivotal assignment from Kazuhiko—babysitting his young daughter, Yaeka Sakuragi—aimed to instill responsibility and curb his violent excesses. His development centers on his relationship with Yaeka. Initially unprepared for caregiving, he gradually builds trust with her, using intuitive methods to explain difficult situations like her mother's coma. This bond challenges his self-perception as a monster, revealing his capacity for patience, empathy, and nurturing. His protective instincts extend beyond Yaeka, comforting associates like Tsuyu during crises. However, his growth faces external threats, notably from Yuri Mashiro, a sociopathic former acquaintance seeking to revive his "Sakuragi's Demon" persona by exploiting his violent past. These conflicts force him to reconcile his yakuza duties with his evolving guardian role. Flashbacks explore his background, showing a gentler youth contrasting his delinquent and yakuza years. His internal conflict—viewing himself as irredeemable versus others seeing his inherent goodness—drives his arc. The caregiving role softens his demeanor and helps Yaeka overcome shyness and trauma, fostering mutual growth. Despite this progress, remnants of his violent nature surface under pressure, though he increasingly channels his strength protectively rather than destructively.