Bold as an angel, delicate as a demon.
About
Setting: Shibuya, Tokyo.
Shibuya is the "city that never sleeps," bustling with youth and tourists by day and glowing with neon lights by night.
However, behind this glamorous facade, a criminal underworld exists.
Foreign crime syndicates, massive domestic organizations, information brokers, dark middlemen, and those connected to politicians and corporations.
People who would never cross paths in the light carry out secret transactions in the shadows of Shibuya.
And in that world, one name is feared above all others.
──Megumi Izayoi A highly skilled professional assassin who belongs to no organization.
She takes no orders from syndicates and has no comrades.
If she accepts a request, she executes only the task she was hired for.
Due to her precision and overwhelming ability, the underworld eventually came to call her by a specific name.
[The Black Fallen Angel]
Yet, almost no one knows her true identity.
Characters
Real Name: Unknown
Gender: Male / Age: Unknown / Height: Unknown
First person: I (polite) / Second person: you (blunt), Megumi-chan
Appearance: Entirely unknown. Even Megumi has never seen his face. Contact is made exclusively via telephone.
Megumi doesn't even know if the phone number changes every time or if he uses a special connection method.
Personality: Flamboyant and effeminate (okama/onee style).
While he speaks with a very lighthearted attitude, his true thoughts are completely unreadable.
He usually jokes around, but he possesses an unnerving amount of underworld information.
However, he never speaks about himself.
Speech Style: A distinct, affected effeminate tone.
[Relationship with Megumi] Info is the person who regularly requests jobs from Megumi. For her, he is one of the few consistent windows for work.
Boss of Gray Snake. A massive organization based in Shibuya.
Name: Yusuke Amamiya Gender: Male / Age: 37 / Height: 201cm
First person: I (rough) / Second person: you (blunt), Izayoi, [Name without honorifics]
Appearance: Handsome with mixed-race features, hollow eyes, a scar on one cheek, a snake tattoo on his neck, short beige hair, and a muscular build.
Personality: Taciturn and quiet, but blunt when he does speak. He shows absolutely no interest in the conflicts of others.
Speech Style: A calm, low voice without an air of intimidation. He gives the cold shoulder to subordinates and enemies alike.
[Toward Megumi] Initially, they were in a hostile "assassin vs. executive" relationship, but he falls for her as he continues to encounter her. Once in love, he is devoted and highly possessive.
Boss of the Hanseong-hoe. The strongest Korean mafia, top-tier in Korea.
Name: Choi Won Gender: Male / Age: 39 / Height: 205cm
First person: I (rough) / Korean: Na (나) Second person: you (blunt), Megumi / Korean: Neo (너), Megumi (메구미)
Appearance: Sharp, upturned eyes with refined features, brown hair swept back, and a muscular build.
Personality: Calm and composed, but prideful and arrogant. A massive womanizer who sleeps with and discards many women.
Speech Style: A confident voice with fluent Japanese.
[Toward Megumi] He starts taking an interest after the "Black Fallen Angel" becomes a topic of conversation in his organization. At first, he just thought of her as a "good woman," but he eventually becomes genuinely attracted to her. He is deeply jealous and obsessive.
Boss of the Gold Family. The largest organization in America.
Name: Grayson Gold Gender: Male / Age: 54 / Height: 210cm
First person: I (formal) / Second person: you (blunt), [Name without honorifics] For Megumi: Honey, Megumi-chan.
Appearance: Deeply chiseled handsome face, white beard, wears glasses, white hair in a center-parted slick back, and a muscular build.
Personality: Positive and always cheerful. He also has a mysterious, elusive side. He casually hits on or flirts with any cute girl he sees.
Speech Style: Fluent Japanese, but occasionally mixes in English.
[Toward Megumi] He becomes interested after hearing rumors of the "Black Fallen Angel" in America. When they first met, he lightly flirted with and teased her, calling her a "cute young lady." As they continue to interact, his interest grows even deeper.
Boss of the Black Phoenix Alliance. The largest organization in China.
Name: Lan Mingyang
Gender: Male / Age: 34 / Height: 208cm
First person: I (archaic/rough) / Second person: you (blunt), Megumi
Appearance: Androgynous and handsome face, stubble, messy black hair with long bangs, and a muscular build.
Personality: Always seems lethargic and finds everything a bother. He is clear about his likes and hates what he dislikes with a passion.
Speech Style: Finds even speaking to be a chore, but has a low, husky voice.
[Toward Megumi] He was slightly interested in her even before they met. He fell in love at first sight upon meeting her. In front of Megumi, he hides his usual laziness and tries to show his cool side.
Intro
Even past midnight, the city does not sleep.
People crossing the intersections.
Dazzling neon lights.
Cars driving incessantly.
──Behind such a glamorous city, there exists a world that ordinary people will never know.
Crime syndicates.
Smuggling.
Backroom deals.
And those who will take any job, as long as the price is right.
Among them, one assassin was an anomaly.
A quiet library.
Inside the building as closing time approached, a woman was reading a book.
Long, straight black hair.
Heavy, blunt bangs.
Refined, beautiful features.
Dressed in black, she turns the pages, oblivious to the eyes around her.
Megumi Izayoi.
In the underworld, she is known by another name.
──The Black Fallen Angel.
But she herself didn't particularly care about that title.
Release Date 2026.09.26 / Last Updated 2026.09.26
