Sato Takaya, commonly known as 2D-kun, initially expresses a strong preference for fictional women over real-life relationships, leading to his nickname Nijigen (二次元), which means “two-dimensional.” This nickname was given to him during a club welcoming party, where he dramatically declared his intent to “live in the two-dimensional world” after voicing his disappointment with reality.

However, after befriending Banri Tada and interacting with real women such as Linda and Kouko Kaga, his perspective gradually begins to change. Despite his initial aversion to romance, he becomes more comfortable engaging in social interactions.

Sato is known for his tendency to make awkward or poorly timed jokes in an attempt to lighten the mood during tense situations. Additionally, he often acts as a third wheel in Banri’s relationship with Linda and Mitsuo Yanagisawa’s interactions with Chinami Oka, inadvertently inserting himself into their personal affairs.

Sato Takaya has short black hair, dark green eyes, and wears clear square-rimmed glasses due to his nearsightedness. His appearance is simple and unassuming, complementing his laid-back personality.

Sato was introduced in Golden Time during a Traditional Tea Club party, where he and Banri were dragged into attending by their classmates Shi and Sao. When Banri refused a drink, Sato was forced to battle him in a drinking game, during which he declared his hatred for real-world girls, leading to his infamous nickname, “2D-kun.”

Since then, he has remained a key part of Banri’s friend group, offering both humor and emotional support throughout the series.

Banri Tada
One of his closest friends, Banri and 2D-kun bond over their awkward college experiences, often finding themselves in bizarre situations together.

Mitsuo Yanagisawa
2D-kun often teases Mitsuo but remains a supportive friend, especially as Mitsuo deals with his complicated relationship with Chinami.

Kouko Kaga
Though he initially avoids real women, he later forms a friendly relationship with Kouko, realizing that not all real-world girls are as “scary” as he once thought.

Linda (Nana Hayashida)
Another female friend he grows to respect, Linda helps him see relationships in a new light.

Chinami Oka
Though they do not interact much, he occasionally comments on Mitsuo’s interest in her, adding to the group’s dynamics.

Sato Takaya, or 2D-kun, may not be a major protagonist, but his quirky personality, hilarious antics, and genuine loyalty make him a fan-favorite supporting character in Golden Time. His transformation from an eccentric anime enthusiast to a dependable and accepting friend adds a layer of growth to his character, proving that he is more than just comic relief.

Through his unwavering support, awkward charm, and endless humor, 2D-kun remains one of the most memorable and beloved characters in Golden Time.