Masamune Gotō is a professional shogi player of the highest rank, nine dan, and belongs to the A-class, the most elite group of players competing for major titles. He is in his early forties, with grey hair and purple eyes, and is physically fit with a stern, intimidating appearance often described as scary looking. His playing style is thick and heavy, frequently favoring the Fortress opening, known in Japanese as anaguma, which reflects a methodical and pressure-heavy approach to the game. In terms of personality, he has a fiery temperament and can be volatile, sometimes struggling to contain his frustration before or after matches, but he is also deeply rational and results oriented, valuing victory and tangible outcomes over sentiment or ideals. He does not hesitate to be blunt or harsh with younger players, not out of malice but from a conviction that the shogi world should not be presented as soft or forgiving. His primary motivations are to win and to prove himself at the highest level, though he carries a powerful sense of inferiority and obsession toward the reigning Meijin, Sōya Tōji, whom he regards as an unattainable summit. This fixation drives much of his intensity. Within the story, he initially functions as an antagonistic presence, most notably when he becomes embroiled with Kyoko Kōda, Rei Kiriyama’s adoptive sister, with whom he is having an extramarital affair. When Rei intervenes out of concern for Kyoko’s suffering, Gotō beats Rei up in a physically violent confrontation, establishing him as both a formidable obstacle and a representation of the harsh, uncompromising reality of professional shogi. His relationship with Rei remains tense and adversarial, though grudging professional respect emerges over time. He is also aware of fellow strong players such as Kai Shimada as part of the competitive landscape he must navigate. Despite his rough exterior, he occasionally reveals a sincere attachment to shogi itself, sometimes offering advice to opponents once a match is decided. On a personal level, his unhappy marriage and his turbulent connection with Kyoko reveal a struggling, trapped side that adds complexity to his character. He does not undergo a major transformation, but his presence consistently underscores the weight of ambition, the bitterness of rivalry, and the emotional toll that the shogi world exacts on those who fight at its peak.