Between Two Lovers begins with a premise built to detonate. Uta, a successful children’s-book author played by Masami Nagasawa, has a husband who wants children and a long-term girlfriend who does too. Neither relationship has been honestly integrated into the other. When the secret surfaces, Uta proposes an arrangement that appears both radical and conspicuously convenient for her: her husband Morio will father a child with her editor and lover, Junna, and all three will live together.
That is not merely a love triangle extended by one chair at the dinner table. Nanako Hirose’s second feature turns reproduction, marriage, cohabitation, secrecy and social legitimacy into pressures bearing down on each member of an improvised household. The film is in Competition at the Busan Film Festival and runs 128 minutes. It is a Japan-Taiwan production from K2 Pictures in association with Bunbuku Inc.
Hirose directs, writes and edits the film, putting a great deal of control over its intimate tone and eventual shape in one set of hands. The results are compelling in the moment, particularly because the three central performances refuse to turn a difficult arrangement into a simple cautionary tale. Yet the drama’s apparent willingness to confront restrictive expectations around women, queer relationships and parenthood is repeatedly undercut by choices that soften or sidestep its sharpest conflicts.
A throuple formed from avoidance, not liberation
The word throuple generally describes a consensual romantic relationship involving three people. It can imply mutual knowledge, negotiation and shared commitment. In Between Two Lovers, however, the three-person household begins in the wreckage of deception. That distinction matters.
Uta has spent six years seeing Junna, played by Shizuka Ishibashi, while maintaining her marriage to Morio, played by Tasuku Emoto. Her public life looks settled: she is financially comfortable thanks to her popular Little Miss Mushroom picture-book series, and her work places her frequently around children. Privately, she avoids the possibility of becoming a parent herself. Morio’s wish to have children is dismissed whenever he tries to raise it.
Junna’s situation is more complicated still. She wants to be a mother, but the story establishes legal obstacles that restrict her access to sperm donation or fertility treatment. She also wants Uta to acknowledge their relationship openly, accept her sexuality and leave the marriage. For Junna, the relationship is not only emotionally hidden; it is constrained by structures that limit her options for building a family.
The truth emerges when Morio invites Junna to dinner, believing he is simply entertaining the work colleague who absorbs so much of his wife’s attention. Alcohol and accumulated frustration expose what Uta has kept compartmentalized. Rather than deciding between her relationships or accepting the consequences of the secrecy, Uta identifies a solution that lets her preserve both: Morio can be Junna’s donor, and the three can share a home.
It is a volatile proposition because each person enters with a different need. Morio wants a child. Junna wants motherhood and a life with Uta that is no longer secret. Uta appears to want the continuity of both relationships without a decisive change to her own position. A film with this foundation can investigate whether a nontraditional family arrangement can be sustainable, but it can also ask a more uncomfortable question: can an arrangement be genuinely consensual when it emerges from an imbalance of information, power and desire?
Related coverage includes Between Two Lovers Pits an Unstable Throuple Against Japan’s Family Expectations.
The drama sees the pressure points, then eases away
Hirose clearly recognizes the destructive potential in the premise. Pregnancy and cohabitation rearrange the emotional geometry of the household. Morio, initially presented as tender and fragile, grows increasingly protective of Junna as she carries his child. Junna begins to occupy roles that read as both maternal and spousal within the home. Uta, who designed the arrangement in large part to avoid a choice, finds herself excluded from the closeness developing around her.
That reversal has an obvious dramatic charge. The person who thought she could control the terms of the family begins to feel like its least essential member. The film does not force Uta to define her sexuality or insist that she select one partner over another. That restraint is potentially valuable: identity is not always clarified on demand, and a character’s lack of a neat label is not a flaw that requires correction.
But ambiguity around identity is different from ambiguity around accountability. Uta’s indecision and self-interest leave real consequences for Morio and Junna, and the story’s tendency toward compromises makes its critique feel muted. The social and legal restrictions confronting Junna are present, but they are treated as barriers to work around rather than systems the film meaningfully challenges. The result is a drama that introduces questions with urgency but settles into answers that can feel unduly accommodating.
That tension is likely to define viewers’ reactions. There is genuine significance in a contemporary Japanese drama putting same-sex parenting, unconventional domestic arrangements and women’s presumed social roles at the center of its story. Representation alone does not make a work progressive, however. What matters equally is the agency granted to its characters, the structures it interrogates, and whether its resolutions expose those structures or quietly preserve them.
Between Two Lovers appears caught between those impulses. Its setup pushes toward a confrontation with convention; its later dramatic path is less prepared to sustain that confrontation. The film therefore may frustrate audiences seeking a bolder challenge to the rules it identifies, even while its subject matter ensures the project has more on its mind than a conventional romantic melodrama.
Nagasawa anchors a deliberately difficult protagonist
The cast is a major reason the film remains involving even when its characterization strains sympathy. Nagasawa makes Uta difficult in a notably direct way. Uta is naive about the damage created by her choices, but she is also selfish, and the performance does not ask the audience to confuse her charm with innocence. That willingness to make the central figure unpleasant is crucial. A softened Uta would turn the movie’s premise into a fantasy of frictionless personal freedom; Nagasawa instead keeps the character’s evasions visible.
Ishibashi gives Junna resilience and empathy despite the disproportionate burden the narrative places on her. Junna must navigate Uta’s indecision, Morio’s growing involvement and the external limits placed on her route to parenthood. She is often the character absorbing the consequences of other people’s choices, which makes Ishibashi’s ability to maintain Junna’s emotional clarity especially important.
Emoto’s Morio is not reduced to a stock obstacle in Uta and Junna’s romance. He is emotionally exposed, well-intentioned and increasingly unstable under the circumstances. His desire for a child drives the arrangement, but it does not erase the betrayal he has experienced or the complicated attachment he develops with Junna during her pregnancy. The film’s best material lies in observing how these three incompatible desires continue to overlap inside the same home.
The emphasis on uneasy, imperfect character behavior may appeal to viewers who value relationship dramas that refuse easily likable leads. It also places a heavy responsibility on the screenplay. If a narrative wants viewers to stay with characters who make damaging decisions, it needs to turn those decisions into discovery rather than merely circulation. Here, the acting supplies much of the emotional credibility when the story’s larger decisions prove less persuasive.
Two homes, one divided life
The technical work gives the film a polished surface suited to a drama of competing domestic identities. Ryo Sugimoto’s production design distinguishes the married couple’s suburban home from the more clandestine space shared by Uta and Junna. Both environments have warmth, but they are not interchangeable. Their subtle differences externalize Uta’s split life: each space offers a version of belonging, and neither can remain sealed off from the other.
This is an effective use of production design, the discipline responsible for shaping a screen world’s physical look and environment. In a relationship film, homes can function as more than backgrounds. They reveal who is accommodated, who is visiting, whose taste dominates, and what sort of future seems possible within a room. The contrast between these spaces supports the central idea that Uta has been moving between distinct lives until the arrangement makes that separation impossible.
Yao Hung-I is credited as cinematographer, while HIMI’s score is used sparingly. The restrained musical approach suits a story where the primary drama is interpersonal rather than plot-driven spectacle. Still, the careful craft has less lingering force than the film’s contentious writing choices. The visual polish frames the conflict well, but it cannot resolve the uncertainty surrounding what the narrative finally wants to say about the family it assembles.
Why the film’s unresolved friction matters
There is a productive difference between a film leaving its audience with unresolved feelings and a film appearing to retreat from the implications of its own premise. Between Two Lovers operates in that gap. Its refusal to impose a single identity on Uta can be read as an honest rejection of simplistic categorization. Its depiction of a family outside conventional marriage-and-children expectations can also be valuable simply because such lives are too often excluded from mainstream drama.
At the same time, the narrative is dealing with constraints that are not only personal. Junna’s limited access to fertility care and donation is an institutional issue, not merely a complication that adds melodramatic stakes. When a story raises those restrictions but accommodates them rather than probing their injustice, its social critique loses force. The danger is that the burden shifts back onto the characters to endure conditions the film has already identified as unfair.
That makes Between Two Lovers a noteworthy but uneasy watch: ambitious in its domestic setup, strongly performed, and attentive to questions of who gets to define a family. It is less convincing when it must follow those questions to their most difficult destination. Readers seeking another recent film assessment can also see our review of Wildwood.
For Hirose, whose credits here span direction, screenplay and editing, the film demonstrates a clear attraction to family structures under strain and to characters whose wants cannot fit comfortably together. Its strongest achievement is not offering a model answer for how this household should work. It is making clear how much each person stands to lose once private compromise becomes a shared way of life.
