Ittetsu Takeda, Karasuno High School’s boys’ volleyball team faculty advisor, instructs contemporary Japanese literature while balancing his evolving role as a determined mentor. Despite his initial unfamiliarity with volleyball tactics, his unwavering dedication drives him to support the team through meticulous logistics, emotional encouragement, and strategic networking. Standing at 166.5 cm with tousled black hair, brown eyes, and glasses, his youthful appearance often leads to mistaken identity, blurring the line between teacher and student—a trait that persists even post-timeskip, when his hair lengthens but his earnest demeanor remains unchanged. Earnest and humble, Takeda navigates interactions with quiet intensity, punctuating conversations with polite bows to convey gratitude or urgency. While typically cheerful, his temper flares when provoked, revealing an unexpected sternness. He crafts motivational speeches laced with literary analogies, though he privately questions their impact—doubts swiftly dismissed by players like Daichi Sawamura, who credits Takeda’s presence as pivotal to the team’s spirit. His tenacity secures critical resources, from persuading former alumnus Keishin Ukai to coach by leveraging the Nekoma rivalry to organizing cross-school training camps that propel Karasuno’s growth. Armed with a notebook to document rules and strategies, Takeda evolves from novice to informed strategist, observing rotations and delayed spikes during matches while deferring to Ukai’s tactical expertise. He coordinates transportation, schedules, and inter-school collaborations, ensuring seamless operations. Beyond logistics, he bolsters morale through symbolic gestures, like unveiling a restored team banner before tournaments, and balances approachability with discipline, addressing student concerns without compromising authority. Players like Tanaka and Nishinoya affectionately nickname him “Take-chan,” reflecting mutual respect, while his camaraderie with coaches extends to sharing drinks with Nekomata of Fukurodani during training camps. Spin-off media briefly features a child version of Takeda, though his adult role stays consistent. Personal details—a January 10 birthday, a fondness for nikujaga, and cooking skills lauded by manager Kiyoko Shimizu—add depth, as does his playful irritation over outdated glasses. Post-timeskip, he remains Karasuno’s steadfast advisor through 2018, bridging his academic life with athletic mentorship despite his own non-athletic background.