Hideki Nishimura, known in the online world by his username Rusian, is a seventeen-year-old high school student who serves as the main protagonist of his story. As a dedicated player of the MMORPG Legendary Age, he has fully embraced the culture of online gaming, designing his avatar as a knight and filling the tank role for his guild. In the real world, he is an open otaku who speaks freely about his in-game activities and relationships without embarrassment. Though generally socially functional, he carries a deep-seated wariness of romantic attachments formed through the internet.

This cautious outlook stems from a painful and humiliating past incident. Some time before the main events of the story, Nishimura mustered the courage to confess his feelings to a female character he had met online. The object of his affection cruelly revealed that, in reality, he was a man, an experience that left Nishimura traumatized and deeply mistrustful of any female avatars. This betrayal, later discovered to have been perpetrated by his teacher Ms. Saito who concealed her identity, became the defining event that shaped his initial reluctance to engage in serious online relationships. It is for this reason that he initially accepted the in-game marriage proposal from his fellow guild member Ako not out of romantic confidence, but out of a resigned philosophy that a character’s gender matters little as long as the avatar itself is aesthetically pleasing.

Despite his cynical armor, Nishimura’s core personality is defined by his grounded common sense and a genuine, if often frustrated, sense of responsibility. He is frequently cast as the straight man to the eccentric and delusional behavior of his guildmates. Among the group, he is often the one trying to apply logic to absurd situations, particularly when dealing with Ako, his in-game wife who genuinely believes their marriage transcends the digital divide into real life. While he finds her obsessive and clingy nature exhausting, his primary motivation becomes helping her learn to distinguish between the game world and reality, attempting to gently guide her toward a healthier perspective without breaking her heart. This mission is complicated by his own persistent awkwardness, as his trauma leaves him extremely slow and hesitant in handling the affections of a real girl who is so intensely devoted to him.

The revelation that not only Ako but all of his guild members are actually girls from his own school forces Nishimura to reevaluate his worldview. His primary relationships are therefore with the three female members of the Alley Cats guild. His dynamic with Ako Tamaki is the central focus of his development; he must navigate the strange territory of being a high school student treated as a husband by a classmate who cannot separate fantasy from reality. His relationship with Akane Segawa, who plays the knight Schwein, is one of a classmate and fellow gamer who often teases him, while Kyou Goshouin, the student council president known in-game as Apricot, serves as an authoritative and planning figure within their group. He also has a younger sister named Mizuki, who exists outside the immediate gaming circle.

Throughout the story, Nishimura’s character arc is one of gradual acceptance and growth. He moves from a position of absolute distrust toward female gamers to a reluctant acknowledgment that his guildmates are genuine friends, even if they are unusual. This is tested during a critical incident where his account is hijacked; his consistent, slow-burn personality ironically becomes the key evidence that allows Ako to identify the impostor, proving that his very nature has become a bedrock of trust within their relationship. He slowly begins to overcome his past trauma, realizing that his teacher’s deception does not define all online interactions. His notable abilities lie not in combat prowess within the game, but in his patience and his role as the anchor of reality for his eccentric group, even as he struggles to express his own true feelings.