Eikichi Chigaya enters Shinzen High School in Saitama Prefecture as a first-year middle blocker on the boys' volleyball team. His imposing 193 cm height immediately grants him a physical edge. Sporting short, curly black hair with a navy tint and dark blue eyes, his distinctive look earns him the mental nickname "Broccoli Head #2" from Tobio Kageyama—a label Chigaya finds amusing. Post-timeskip, his hair lengthens and lightens slightly while his core appearance stays consistent. His left-handedness distinctly shapes his volleyball technique. Naturally friendly and approachable, Chigaya readily starts conversations but can be shy or startled by blunt remarks. He treasures his connection with Kageyama after meeting at the All-Japan Youth Training Camp, proudly boasting of their friendship to teammates like Daiki Ogano. Privately, he doubts whether Kageyama reciprocates or remembers his name. Chigaya openly voices preferences, disliking sekihan despite his manager's frequent preparation of it, and favoring grilled cod roe rice balls. On court, Chigaya displays early promise by grazing Kageyama and Hinata's quick attack during a practice match—unfamiliar with the move yet hinting at his adaptability and blocking instincts. His high school stats show above-average stamina (4/5) and technique (4/5), with game sense at 3/5. Post-timeskip, his spiking and blocking surge to 9/10, enhanced by left-handed unpredictability. He leads Shinzen to Saitama’s prefectural finals, losing in straight sets but securing his Youth Camp invitation. There, he observes Kageyama’s blunt interactions with elite players like Sakusa Kiyoomi and Hoshiumi Kōrai, often reacting with surprise. Later, he spectates Spring Nationals with Ogano and Masaki Gōra, watching Karasuno versus Nekoma. In his final arc appearance, Chigaya is a college senior playing middle blocker for V.League Division 1’s VC Kanagawa, sharing the team with Heisuke Riseki and Taketora Yamamoto. Trivia notes his October 19 birthday (Libra), post-timeskip concerns about alcohol pressure due to low tolerance, and his name’s meaning: "Eikichi" blends "Britain/Hero" and "Luck/Good Fortune," while "Chigaya" signifies "Thousand, Deer, Valley."