Matsumoto is a supporting character in the film The Garden of Words. He is a classmate and close friend of the protagonist, Takao Akizuki, though he belongs to a different class at school. Matsumoto is one grade below a female student named Satou, with whom he is in a romantic relationship. His role in the story is minimal, primarily serving as a peer within Takao’s school environment. The narrative does not explore his background, personality, motivations, or any notable abilities in depth, and he does not undergo any significant character development. His key relationship is his connection to Takao as a friend and to Satou as her boyfriend. Beyond these basic details, the film provides no further elaboration on his character.