Ryo Yoshizawa
Suguru Ubukata
Overview
On a massive luxury cruise ship while at sea, the loyal butler and a mysterious woman cross paths as they try to uncover a murder-mystery that occurs on the ship.
Cast
12 people
Reviews
5 min readA Cruise Ship Adrift in Its Own Ambitions
I’ll admit it: I wanted to love In Love and Deep Water. The premise—a murder mystery unfolding on a luxury cruise ship, with a butler and a mysterious woman at its center—sounded like a perfect storm of Agatha Christie and screwball romance. The setting alone, a floating palace of glass and gold, promised visual spectacle.
And for a while, the film delivers on that front. The camera lingers on the ship’s opulent halls, the glittering chandeliers, the endless blue of the ocean stretching beyond the railings. It’s the kind of movie that makes you wish you could pause and wander through the frames, if only to escape the mess unfolding within them.
But here’s the thing about cruise ships: they’re designed to make you forget you’re trapped at sea. In Love and Deep Water never quite shakes that feeling of confinement, not because of its setting, but because it can’t decide what kind of story it wants to tell. Is it a murder mystery? A romantic comedy?
A character study of two people drowning in their own secrets? The film lurches between these tones like a passenger stumbling after one too many cocktails, and by the time the credits roll, you’re left wondering if anyone was actually steering the ship.
The central pairing of Ryo Yoshizawa’s Suguru, the dutiful butler, and Aoi Miyazaki’s Chizuru, the enigmatic passenger, is the film’s most compelling element. Their chemistry is undeniable—there’s a quiet, almost reluctant intimacy between them, the kind that feels earned rather than scripted. Yoshizawa plays Suguru with a restraint that borders on stiffness, his posture rigid, his expressions carefully neutral, as if he’s spent his life perfecting the art of being invisible.
Miyazaki, meanwhile, brings a smoldering unpredictability to Chizuru, her eyes darting with suspicion one moment and softening with something like vulnerability the next. When they’re on screen together, the film crackles with possibility. You can almost forget, for a moment, that the plot around them is unraveling.
Almost.
Because the murder mystery—ostensibly the engine of the story—keeps getting sidelined. The film introduces a body early on, then promptly loses interest in the investigation, preferring instead to meander through subplots involving cheating spouses, jealous lovers, and a parade of secondary characters who feel like they wandered in from a different movie. Lori Meek at Ready Steady Cut put it bluntly: "In Love and Deep Water is a less-than-coherent flick with a confusing plot and poorly fleshed-out characters." It’s hard to argue with that assessment.
Full Plot (Spoilers)
Spoiler warning
This section contains the full plot, including major story reveals. Overview above stays spoiler-free.
Buzz & Rumors
Public reportsBehind the Scenes of In Love and Deep Water: A Cruise Ship Mystery with Star Power
In Love and Deep Water (2023), directed by Yusuke Taki, blends romance and murder mystery aboard a luxury cruise ship. With a cast featuring Ryo Yoshizawa, Aoi Miyazaki, and Rinko Kikuchi, the film promises intrigue—but what do we know about its production and the dynamics behind the scenes?
A Star-Studded Cast with Mystery at Its Core
The film’s premise revolves around Suguru, a loyal butler (played by Yoshizawa), and Chizuru, a mysterious woman (Miyazaki), who team up to solve a murder that occurs mid-voyage 
. The ensemble cast includes Kento Nagayama, Yuki Izumisawa, and Aju Makita, suggesting a mix of seasoned actors and rising talent. Kikuchi, known for her roles in Babel and Pacific Rim, adds international appeal, though her exact role remains under wraps in available snippets.
While the evidence doesn’t detail character arcs, the cruise-ship setting—a confined, high-stakes environment—hints at claustrophobic tension, a trope often used to heighten drama in mysteries. The film’s tone likely balances romance and suspense, given its genre classification as a "mystery-romance" .
Production Clues: A Japanese Blockbuster in the Making?
Details about the film’s production are sparse, but the scale of a luxury cruise ship suggests a significant budget. Japanese mystery films often rely on meticulous set design and cinematography to immerse audiences, and In Love and Deep Water may have leveraged practical effects or CGI to bring the ship to life. However, no behind-the-scenes footage or interviews are referenced in the available snippets, leaving questions about on-set challenges unanswered.
One unverified angle is whether the film faced delays or logistical hurdles, common in productions involving large sets or water-based scenes. Without explicit evidence, this remains speculative.
Reception and Rumors: What’s Missing?
The film’s IMDb and Letterboxd pages confirm its existence and basic plot, but critical reception or box-office performance isn’t mentioned in the snippets . Similarly, there’s no word on whether the cast’s chemistry translated on screen or if any improvisation shaped key scenes. For now, the focus remains on the mystery itself—who’s the victim, and why does Chizuru hold the key?
The Bottom Line
In Love and Deep Water is a high-concept Japanese thriller with a strong cast, but behind-the-scenes details are thin. The cruise-ship setting and murder-mystery hook suggest a visually rich experience, though fans will need to watch the film to uncover its secrets—or wait for more production stories to surface.
Entertainment rumors and trivia aggregated from public reporting. Treat speculation as unverified unless a cited source confirms it.