OVA
Description
Kiyokuni Azuma is a former student of Seidou High School, where he served as the team’s fourth batter and cleanup hitter before the arrival of the main protagonist group. A physically imposing figure with a large build, he stands 193 centimeters tall and weighs 95 kilograms. His distinctive speech uses the Kansai dialect, reflecting his origins from Osaka Prefecture.

Azuma’s personality is initially presented as brash, arrogant, and verbally harsh, particularly towards underclassmen he feels are not performing adequately. On the day of Sawamura Eijun’s initial visit to Seidou, Azuma is seen aggressively criticizing pitcher Norifumi Kawakami, which provokes a confrontation with the visiting Sawamura. This leads to a challenge where Sawamura, forming an impromptu battery with Kazuya Miyuki, manages to strike Azuma out. Despite his intimidating exterior, Azuma’s behavior masks a genuine care for his teammates. He later explains that he only yells at the players he truly likes and wants to see improve. This caring nature is further demonstrated when he privately encourages Kawakami, advising him to pitch with more confidence.

His role in the narrative is primarily that of a formidable predecessor whose shadow looms over the current team. He is a legendary slugger for Seidou, having hit forty-two home runs during his high school career, a feat that earned him recognition as an outstanding player and eventual advancement to professional baseball. Other characters, such as the highly skilled Chris Yuu and the proud Jun Isashiki, speak of Azuma with a level of deference that underscores his immense talent and influence within the club.

Azuma’s key relationships are often defined by his tough-love approach. His dynamic with Sawamura begins with conflict but evolves into a more respectful acknowledgment of the younger pitcher’s growth. Similarly, his harsh treatment of Kawakami is later revealed to be a form of special attention meant to bolster the pitcher’s mental fortitude. Despite his intimidating presence on campus, he maintains a strong connection to Seidou after graduating, returning to visit the team, gifting them with supplies, and offering encouragement before important matches. He also shares a history with Kenta Maezono, having been teammates with him in the Osaka Boys' League.

In terms of development, Azuma’s character arc moves from being an antagonistic and seemingly one-dimensional bully to a more nuanced senpai figure. His vulnerabilities are hinted at through past defeats, such as being struck out by a middle schooler and being overpowered by the ace Narumiya Mei in a tournament semifinal, which adds layers to his otherwise confident demeanor. After leaving Seidou, he continues his baseball career as a professional player, typically fielding as a first baseman or serving as a designated hitter. His professional path is not without struggle, as he faces challenges like managing his weight. In a later visit to his alma mater, he even willingly stands in as a batter to help Sawamura practice a new pitch, a moment that highlights his ongoing, albeit indirect, mentorship of the current team. This act solidifies his reputation as a "good guy" beneath the gruff exterior, a senior who continues to contribute to Seidou's baseball legacy from beyond its roster.