TV-Series
Description
Jin Tsukamoto is a second-year student and a member of the Fujimi High School soccer club. He is a recognizable figure on the team, primarily known for his thick-framed glasses, which have earned him the nickname Glasses. He wears the number 4 jersey and is one of the key players forming the defensive trio known as DF3.

Before attending Fujimi High School, Tsukamoto experienced a difficult period during middle school where he was subjected to bullying by older students, his senpai. This negative experience caused him to develop a gloomy and reserved personality, leaving him withdrawn and lacking confidence. His entrance into Fujimi High was a turning point, as meeting and befriending teammates like Kazuma Sakai helped him slowly recover his spirits. Over time, he was able to leave behind his dark demeanor and embrace a more cheerful and positive disposition.

Tsukamoto's role within the soccer club extends beyond just defense, as he has been appointed the good vibrations officer. In this capacity, he is responsible for boosting team morale and pumping up his teammates, particularly before matches. His signature method for accomplishing this is a unique and somewhat quirky warm-up exercise he calls his time-honored treasure: the butt lifts, which he refers to as Shirifting. This ability involves a specialized gluteal lift that has become his trademark.

Despite his newfound cheerfulness, Tsukamoto carries the scars of his past. During a match against Minamida Fuzoku High School, he comes face to face with Kadomatsu, the team captain who had been his tormenting senpai in middle school. The encounter causes him to freeze up and act strangely on the field, as old fears resurface. His character arc culminates when his teammate Aoyama, aware of what is happening, helps him confront and overcome this lingering psychological block. Aoyama provides crucial support, allowing Tsukamoto to get past his fear of his former bully and perform as a reliable member of the team.

Off the field, Tsukamoto is an active user on social media, where he goes by the online alias Gentleman Glasses Z. This activity showcases a more outgoing side of his personality that he has developed in his new high school environment.