TV-Series
Description
Q.P., whose full registered name is Quality of Perfect, is a second-year high school student and a member of the German under-17 national team in The Prince of Tennis II: U-17 World Cup Semifinal. He serves as the team's number two player and its chief strategist, gathering and analyzing information on rival nations during Germany's pursuit of a tenth consecutive World Cup title. His original name was Quark Puppe, a German phrase meaning "Unimportant Puppet." As an infant, he was taken in by a tennis academy and received this nickname because he had no name. In a decisive break from that dismissive label, he later adopted the name Quality of Perfect and made it his legally registered name.

Physically, Q.P. has short white hair and grayish-blue eyes, and his doll-like appearance is frequently commented on, a comparison he is known to dislike. On the surface, he is stoic and nearly emotionless, and his calm, precise manner extends to everything he does. This demeanor is rooted in his past: he was a solitary child who grew up in an institutional setting and did not open up to others easily. Beneath his cold exterior, however, he shows traces of a more refined private character, including an appreciation for the music of Mendelssohn, a habit of making phone calls to an unidentified person during camp, and a talent for preparing outstanding meals within thirty minutes. His stated motto holds that what is demanded of genius is, first and last, love and truth, which hints at values that go beyond his reputation for mechanical perfection.

Because he received elite tennis training for gifted children from a very young age, Q.P. became the ultimate product, or masterpiece, of the German Tennis Academy. Although he is not a professional player, he is extremely strong and just as recognizable within the tennis world as the German team's professional standout, Volk. His tennis is described as a play without any gaps, and his name Quality of Perfect is considered a fitting description of his skill. He is also an exceptional analyst, and even a player of Tezuka Kunimitsu's caliber expresses gratitude for the precision of his data analysis and advice. This tactical superiority is evident in exhibition matches, where he regards opponents such as Atobe Keigo and Irie Kanata as being only a fraction of his level and defeats them with little effort. In an earlier exhibition, he teamed with Tezuka to overwhelm the Japanese pair of Atobe and Irie 6-0, demonstrating an almost flawless coordination between the two German representatives.

His central role in the story comes during Germany's semifinal clash with Japan, where he faces Oni Jujirou in the opening singles match. The contest quickly becomes a fierce battle in which both players easily hold their own service games, pushing the first set into a tiebreak. Q.P.'s apparent lack of emotion during the match is given an explanation tied to his past, and he wins the first set through psychological warfare, shifting the momentum in Germany's favor. Oni then awakens a new power, shining with a mysterious light that resembles the Pinnacle of Perfection and seemingly making him invincible, and turns the flow of the match with a technique called Stolzer Strahl. Q.P., as the masterpiece of German tennis, refuses to be defeated easily, and their duel becomes one of the defining matches of the semifinal.

The match against Oni also serves as his main point of development in the arc, bringing his background to the surface and showing that his emotionless image is less an absence of feeling and more a shield built during a childhood in which he was treated as an unimportant puppet. His key relationships are defined by his place on the German team and his opponents on the court: his partnership with Tezuka, his standing alongside Volk as one of Germany's most recognized players, and his rivalry with Oni, who ultimately forces him to confront the limits of his perfect style. Small personal details, such as his fondness for Werther's original candies, his desire for the latest tablet, and his dislike of being told he resembles a doll, round out a character who, despite his flawless and distant image, carries a complex personal history.