52 pages • 1-hour read
Haruki MurakamiA modern alternative to SparkNotes and CliffsNotes, SuperSummary offers high-quality Study Guides with detailed chapter summaries and analysis of major themes, characters, and more.
Content Warning: This section of the guide includes discussion of death by suicide.
Both K and Sumire struggle throughout Sputnik Sweetheart with intense feelings of desire they know will go unrequited. K’s desire for Sumire haunts him, creating an inner turmoil that complicates his relationship with women. Sumire’s own desire for Miu, equally intense, changes her life, forcing her to strive for a better understanding of herself. For both characters, unrequited desire results in disconnection from their closest friends and the world around them, but it also engenders personal growth.
K’s desire for Sumire is sexual, though their relationship is a deep friendship built on mutual understanding and support. Despite the meaningful aspects of their friendship, K cannot stop himself from feeling attraction for Sumire and dreaming of being with her romantically. These urges, however, fill K with guilt as he worries about the effect of his feelings on their friendship, even if he is not able to banish them. The turmoil his unrequited desire stirs in him is a painful reminder of what he cannot have: “It was hard to accept that she had almost no feelings, maybe none at all, for me as a man. This hurt so bad at times that it felt like someone was gouging my guts with a knife” (59). K knows that although Sumire deeply values their relationship, she is not interested in him in that way. He doesn’t resent this, but neither does the knowledge of it extinguish his desire. He equates his emotional pain with deep physical pain, inflicted in one of the most vulnerable areas of his body. This comparison exemplifies both the depth of his pain and his inability to protect himself from it, explaining his fear and his decision not to act on his feelings.
While K desires Sumire, Sumire desires Miu, and she takes a different path in reconciling with that desire. The difference is that while Sumire simply does not feel desire for K, Miu cannot feel desire for Sumire, the result of her traumatic past. K reflects, “This woman loved Sumire. But couldn’t feel any sexual desire for her. Sumire loved this woman and desired her. I loved Sumire and felt sexual desire for her. Sumire liked me but didn’t love me, and didn’t feel any desire for me […] It was all so complicated” (123). He acknowledges the absurdity and complexity of their web of unrequited desire, defining the differences between the desires Sumire and K feel. K can still pine after Sumire, hoping that someday her feelings will change, whereas Sumire is forced to accept that her desire can never be returned. However, she decides to commit to her love for Miu regardless, shaping her daily life around it. Unlike K, who seeks to suppress his desire, Sumire lets her desire for Miu lead her into a new life.
As these characters grapple with their desires, the dissonance created by their unrequited feelings contributes to their sense of feeling lost, which, in turn, results in a feeling of disconnection from reality. While K tries to ignore his desire and Sumire delves into her own, both characters use their unrequited desire to attempt to grow beyond it and reconnect with their world.
In Sputnik Sweetheart, K struggles to define and maintain a clear sense of reality, finding himself questioning its nature and his place in it. This disorientation and sense of detachment from reality speaks to K’s fundamental disconnection from the world around him. The novel uses K’s experience to explore this disconnection, introducing a sense of unreality that unmoors him from the world, reflecting how unanchored he feels in the wake of Sumire’s disappearance.
As the novel progresses and K becomes more involved in the inexplicable events surrounding Sumire and Miu, he loses his grasp on his physical reality. He begins to feel, at different moments, as though he is slipping from reality, but the feeling is so abstract that he isn’t able to identify the shift. K’s conflict over his unrequited desire for Sumire and her disappearance is expressed through the conflict between his reality and his sense of distance from it. This disconnection manifests both physically and mentally as, at times, the very world around him seems to change: “The world had lost all sense of reality. Colors were unnatural, details crude. The background was papier-mâché, the stars made out of aluminum foil. You could see the glue and the heads of the nails holding it together” (84). K does not see the world he recognizes but an imitation of it, made from everyday materials. This false world highlights his disconnection as he begins to doubt reality, wondering if what he sees is reality or a mere reflection. As the novel progresses, K’s sense of disorientation exceeds that of his physical surroundings and enters the realm of his worldview.
Just as K struggles to situate himself in physical reality, he also struggles to order his internal beliefs. At different points in Sputnik Sweetheart, K loses his grasp of what he believes and how he understands the world. His disorientation worsens as he “start[s] seeing dualisms such as theme and style, object and subject, cause and effect, the joints of my hand and the rest of me, not as black-and-white pairs, but as indistinguishable one from the other. Everything had spilled on the kitchen floor […] All mixed into one fine blob” (134). The breaking down of these basic dualisms reflects how his sense of reality becomes further eroded the more involved he becomes in investigating Sumire’s disappearance. He struggles to determine what is real and what is not, or how to even order a series of events. This erosion of reality, which begins with a sense of disconnection from the physical world, extends as he becomes unmoored by Sumire’s disappearance. His sense of the erosion of reality parallels an internal change within him, his disconnection from Sumire leading to a larger disconnection from reality itself.
Throughout Sputnik Sweetheart, writing plays a unique role in the narrative. Sumire dreams of being a novelist. Through her writing, she explores her life, communicating what she hopes for and discovering her thoughts and feelings. It is an expressive medium for her, one in which she captures her thoughts and feelings, making it a resource for K as he tries to solve the mystery of her disappearance. Her writing also serves an important narrative purpose in the novel, giving Sumire a voice and a way to explore her sense of incompleteness, illustrated through the metaphor of her unfinished writing.
K knows that writing is an important part of Sumire’s identity, and he views it as a reflection of her identity and a barometer for how she is feeling. He characterizes her as being lost and confused, and he believes that her writing reflects this: Sumire writes a lot, but she can never actually complete a project. Her writing is always incomplete, as though she cannot visualize the entire picture, a metaphor for her uncertainty and disconnection. As K considers her writing, he recognizes this: “Sumire wrote some works that had a beginning. And some that had an end. But never one that had both a beginning and an end” (12). She can only capture how a story begins or ends, but her writing reflects her inability to commit to a journey and the instability that indecision brings. She relies on the safety of a completed outcome or an exciting start, with endless possibilities waiting to be written.
The inclusion of Sumire’s letters and writings in the narrative also develops her character and offers insight into her perspective. Though K is the narrator, the chapters that include Sumire’s writing give her the opportunity to take control of her story. After her disappearance, K feels most connected to Sumire through her writing and uses these documents to understand what happened to her: “Her words didn’t have the acrid smell of death. What I sensed in them was rather the will to move forward, the struggle to make a new start” (165). K understands that her writing is a reflection of her state of mind and understands her words as evincing a desire to advance and begin a new life. Through these writings, Sumire’s story transforms and is given definition. Her journey no longer depends solely on K’s perspective; instead, it is contextualized by her voice, which offers answers and insight that K doesn’t possess.
Sumire’s writing is essential to Sputnik Sweetheart. Because she uses writing to understand her feelings, her writing is representative of her state of mind. In addition, it captures Sumire’s feelings and experiences that K does not witness, giving her a voice and a palpable presence despite her inexplicable disappearance.



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