Hisashi Kinoshita is a second-year student in Class 2 at Karasuno High School. Standing at 174.7 cm tall and weighing 65.5 kg, he holds the distinction of being the shortest among the second-year players, apart from Nishinoya. His birthday falls on February 15th. On the volleyball court, he wears jersey number 7, primarily contributing as a wing spiker and pinch server. His abilities are rated: power 3, jump 2, stamina 3, intellect 2, technique 2, and speed 4. Kinoshita, alongside Ennoshita and Narita, initially quit the volleyball club in their first year, overwhelmed by former coach Ikkei Ukai's demanding training. They later returned, fueled by their enduring passion for the sport, only to find Ukai had departed due to health issues. This experience led the trio to internally label themselves the "disgraceful" or "ungrateful" second-years, marked by regret over their past decision. Kind yet reserved, Kinoshita often displays anxiety about his volleyball skills despite possessing an "uncanny knack of putting points on the board." During matches, he transforms into an enthusiastic supporter, becoming a main pillar of Karasuno's cheering squad. Off the court, he interacts well with teammates, occasionally teasing individuals like Tanaka for excessive behavior. He shares a close bond with fellow second-years Narita and Ennoshita, frequently studying or engaging in group activities with them. His primary focus is refining his jump float serve through dedicated practice. This intense effort causes Yamaguchi, the team's regular pinch server, some concern about being replaced. At the Tokyo Nationals training camp, Kinoshita's serves prove difficult even for Nishinoya to receive consistently, prompting the libero to explain the specialized techniques required and highlighting a defensive gap he aims to close. Kinoshita's role evolves from supportive spectator to active participant during official matches. His first significant chance comes in a practice match against Date Tech, where he scores a service ace but later faults, leading to a warning from Coach Ukai about hesitating during substitutions. At the Spring National Tournament, he plays against Tsubakihara Academy and Kamomedai High, though his serves sometimes land out. Facing Inarizaki, he conquers his nerves after Ukai reminds him their opponents are ordinary high schoolers. Although his serve is cut off, he mentally prepares for future chances by visualizing consecutive aces. A recurring theme finds Kinoshita feeling overshadowed. After Ennoshita plays against Wakutani Minami and Narita participates in the Shiratorizawa match, he privately worries about being "left behind" without a defining moment. However, he contributes crucially during the Inarizaki match by helping Nishinoya reposition effectively against Atsumu's jump float serves, overcoming the libero's temporary hesitation. Nishinoya acknowledges this vital assistance with a pointed gesture of appreciation. Following high school, Kinoshita is employed by a train company as of 2018. He remains connected to volleyball, attending a professional match featuring former teammates years later.