Yes, the romance subplot finally ignites. For three volumes, fans have shipped Hotaru with two very different characters: Riko, the loyal hacker with a secret crush, and Kai, the rogue agent who may or may not be a double agent.
In Volume 4, that tension boils over. A late-night stakeout scene between Hotaru and Riko has been shared across Twitter as “the hottest two pages without a single kiss.” Meanwhile, Kai betrays The Warden to save Hotaru—but at a cost that leaves their relationship in shambles. Reviewers note that the emotional heat rivals the action sequences, making this volume feel dangerously intimate.
The protagonist, Hotaru (played with icy precision by Sora Aoi), is the engine that drives the film. Unlike the timid archetypes often found in adult-oriented Japanese cinema, Hotaru is a femme fatale in the classic noir tradition. In Volume 4, her characterization is sharpened. She isn't stealing for survival; she is exacting vengeance.
The "Hyper Swindler" format relies on a simple but effective morality: Hotaru only targets those who deserve it—rapists, corrupt businessmen, and human traffickers. Volume 4 excels because the "mark" (the victim of the con) is particularly loathsome, making the audience root for Hotaru with zero reservations. It turns the tension of the heist into a bloodthirsty desire for justice.
Volume 4 doesn’t waste time. The opening chapter throws Hotaru into a high-society auction where the prize isn’t a painting—it’s a flash drive containing evidence that could topple a government. But The Warden is already there, disguised as the auctioneer. hotaru the hyper swindler series vol 4 hot
What follows is a 40-page cat-and-mouse sequence that readers are calling “the hottest mind game in modern manga.” No punches are pulled. Hotaru loses a pawn early, and for the first time, we see her sweat. The tension is palpable, the dialogue razor-sharp, and the double-crosses keep coming until the final page.
The artwork in Hotaru the Hyper Swindler Series Vol 4: Hot continues to impress, with vivid illustrations that bring the characters and their world to life. The style is engaging, complementing the narrative's fast-paced and suspenseful nature. The use of visual effects and character expressions adds to the storytelling, making the reading experience even more immersive.
Mangaka Yuki Himura has always been praised for dynamic, cinematic layouts. But in Volume 4, the art reaches a new peak. Action sequences use aggressive diagonal panels and speed lines that feel hot to the eye. One chase scene through a burning casino is being called “the most visually scorching sequence in the series”—literally, as Hotaru dodges flames and bullets simultaneously.
Color inserts (in limited edition prints) show Hotaru in a blood-red outfit that fans have dubbed her “final game attire.” The combination of warm palettes, harsh shadows, and expressive close-ups makes this volume a sensory overload in the best way. Yes, the romance subplot finally ignites
The Phoenix Trust reveals itself. Their leader, a man named Mercury, offers Hotaru a deal: help them steal a cryptographic key from a high-roller’s safe, or they will kill the only person who knows her original identity. The catch? That person is Kitsune—her rival and possible long-lost sister.
The final 50 pages contain five consecutive double-crosses, ending with Hotaru setting fire to the ship’s vault (aided by the thermochromic ink clue from the real-world "Hot Edition"—a brilliant meta-joke for collectors).
Scrolling through #HotaruVol4 on social media, it’s clear the fandom agrees:
“Volume 4 is HOT. Not just spicy—it’s like the whole book is on fire. Hotaru has never been more savage.” – @manga_meltdown Scrolling through #HotaruVol4 on social media, it’s clear
“That auction scene alone is worth the price. My heart was racing. Literally hot to the touch.” – @swindler_stans
“If you thought Vol 3 was intense, Vol 4 turns the heat to max and breaks the dial off.” – @read_or_perish
Even professional critics have taken notice. Manga Journal wrote: “Himura raises the temperature in every sense—emotional, visual, and narrative. Volume 4 is a scorcher.”