Kiyotaka Ijichi, a 27-year-old human affiliated with Tokyo Jujutsu High (born April 20), possesses a relatively tall, slim frame and mid-length black hair parted across his forehead. His small black eyes, curved black eyebrows, and sunken cheeks create a resting bored expression, typically accentuated by glasses and professional black suit attire. As a student, his facial features remained similar but his hair was shorter and unparted. Initially enrolling to become a jujutsu sorcerer, Satoru Gojo explicitly advised him to abandon that path, bluntly citing inadequate combat aptitude and threatening physical reprimand. Though initially shocked and perceiving incompetence, Ijichi later recognized this as protective guidance that likely saved his life. He shifted to support roles, rising to assistant manager then assistant director, while retaining trauma-induced anxiety around Gojo and Kento Nanami, whom he deeply fears displeasing. Ijichi exhibits calm, rational, and reserved professionalism in duties like overseeing auxiliary managers or coordinating operations such as the Shibuya Incident communication. He feels profound guilt when missions endanger students, particularly regretting his inability to prevent Yuji Itadori’s death during the Cursed Womb: Death Painting Arc and Yuji’s Mahito confrontation, leading to overprotective tendencies toward Yuji. He cares deeply for students and colleagues, dismayed by any ally’s death. Though generally composed, interactions with Gojo’s unpredictability or high-stress leadership conflicts trigger significant nervousness. His underlying kindness surfaces in attempts to dissuade the Hasaba twins during the Night Parade of a Hundred Demons despite their violence. His primary role involves administrative support, mission logistics, transportation, and report management. He excels at desk work—financial management, data handling, document submission, and Excel spreadsheets—proving indispensable for back-office operations. He guides new students on field missions. Though forbidden from frontline combat and lacking innate cursed techniques, his training enables basic jujutsu: conjuring simple shikigami, casting barriers, and deploying the "Curtain" (帳 - Tobari), a dark-domed concealment barrier that hides jujutsu activities, disrupts electronics, and sometimes restricts movement. He also creates "Simple Barriers" for containment/defense, demonstrated when concealing Gojo’s Hollow Technique: Purple against Sukuna in the Shinjuku Showdown. While capable of exorcising Grade 3 curses, his value lies in tactical support and barrier expertise. Key events include frequently driving students to missions. During the Shibuya Incident, he coordinated auxiliary managers until ambushed and critically stabbed by Haruta Shigemo, surviving via Shoko Ieiri’s Reverse Cursed Technique. In the Culling Game, he assisted Maki Zenin’s attempt to extract Tsumiki Fushiguro. His pivotal development occurred in the Shinjuku Showdown, where active barrier support for Gojo against Sukuna and subsequent reflection solidified his understanding of Gojo’s trust, strengthening his resolve to justify it. Trivia notes his favorite food (udon), disliked food (spicy dishes), and specialty (Excel proficiency). He ranked 21st–29th across four official popularity polls. His creator-selected theme songs are "Do Nacchaten Dayo" (Yasuyuki Okamura) and "SPY" (Noriyuki Makihara). His surname combines "Italy/that one" (伊), "earth" (地), and "wisdom" (知); his given name uses "pure" (潔) and "tall" (高). He self-identifies as a "fighter" in support capacity only.