Unique Pitching Form: Hides the ball using flexible shoulders, making it difficult for batters to time their swings. Moving Fastball: Possesses a 'dirty' ball that breaks unpredictably at the end of its flight. Numbers: Throws numerous variations of breaking balls that bend differently depending on the grip. Steel Guts: A player with the mental fortitude to face challenges head-on without shrinking back, even in crises. Loud Hard Worker: Usually simple-minded and noisy, but he is a growth-type protagonist who rose from the bottom to become an ace.

Monster Fastball: Throws an overwhelming fastball that easily exceeds a top speed of 150 km/h. Heavy Ball Quality: The rotation and power of the ball are so immense that the batter's bat is often pushed back or broken. Sharp Forkball: His primary weapon used in combination with his powerful fastball to induce swings and misses. Cool-looking Genius: Appears blunt and cold on the outside, but internally possesses a strong obsession with the mound. Glass Body and Inconsistency: Has weaknesses such as frequent injuries and unstable control in the early stages of a game.

Genius Catcher: Possesses genius-level game calling, accurately reading the opponent's psychology, and a strong arm for throwing out base stealers. Clutch Hitter: Though inconsistent at times, he transforms completely when runners are on base, hitting incredible timely hits. Clever Personality: A sly, quick-witted, and perfect partner who draws out the pitchers' abilities to their absolute limit. Team Captain: Though he may seem prickly on the surface, he is a leader who truly cares for his teammates and leads the prestigious Seido.

Baseball Genius: A genius batter who, despite his small stature, possesses incredible baseball sense and precise hitting techniques. Wooden Bat: Uses a wooden bat, which is rare in high school baseball, and excels at making precise contact with the ball. Solid Defense: Serves as the core of the infield defense (second baseman) with clever judgment and smooth handling. Soft Outside, Strong Inside: Usually shy and quiet, but possesses a terrifyingly strong competitive spirit once on the mound. Secret of the Bangs: Originally had long bangs covering his eyes, but awakens after cutting his hair in his second year.

Overwhelming Speed: Possesses the fastest feet in the series, shaking up the opposing defense with steals and aggressive baserunning once on base. Switch Hitter: Capable of hitting from both the left and right boxes, batting to the team's advantage depending on the situation. Iron Wall Infield Defense: Boasts an incredible defensive range as a shortstop, forming Seido's iron-clad keystone combo with Haruichi. Tsundere Senior: Full of mischief, such as bullying Sawamura with kicks, but is deep-down affectionate and takes good care of his juniors.

Appearance: A coach in his 30s with a face that looks older than his age, characterized by sunglasses and an intimidating impression like a mobster. Personality: A strict tiger on the outside, but soft-hearted on the inside, deeply cherishing his students. Ability: Volunteers as a batting pitcher throwing 140 km/h, boasting physical strength that rivals active players. Belief: Values skill and mental strength over reputation and even turned down professional offers.

Position: Seido High's reliable right-handed sidearm relief pitcher. Play Style: His primary weapons are precise control and sharp sliders and sinkers. Personality: His weakness is a timid and somewhat fragile mentality, but he has a very strong sense of responsibility. Position within the Team: A silent supporter often overshadowed by Sawamura and Furuya. Nickname: Called by the friendly nickname 'Nori' by the club members.

Relationship: Sawamura's middle school baseball teammate and childhood friend. Situation: Remains in Nagano and consistently exchanges text messages with Sawamura to cheer him on. Point: Her affection is deep enough that she keeps clippings of Sawamura's achievements; people around Seido High in Tokyo (especially Haruichi) have mistaken their texts for a girlfriend, making them envious of Sawamura.