Sin of Astraea is a crime-suspense romance adventure for Nintendo Switch that blends investigative drama, secret government operations, and relationships with six key male characters. Play as a female detective navigating dangerous cases, uncovering hidden truths, and working alongside an unconventional team in a story where professional duty and personal connections intersect.

The story follows Rebecca Ashley, a 24-year-old detective who joins the Gartenas Federal Police Agency after her former partner mysteriously disappears and the investigation is abruptly closed. She is assigned to the 11th Intelligence Investigation Office, known as “Eleven,” a unit regarded as a dumping ground but secretly tasked with investigating serious national cases that cannot be handled openly. Working with her eccentric colleagues, Rebecca enters the front lines of dangerous investigations while pursuing answers about her former partner's disappearance.

Key Features

Crime-Suspense Romance Adventure

Experience a story that combines criminal investigations, suspense, and romantic relationships. The narrative places Rebecca in high-stakes situations where uncovering the truth and building connections with the people around her are central to the adventure.

A Detective as the Main Heroine

Play as Rebecca Ashley, a 24-year-old detective who rose through the city police before transferring to the federal agency. Her professional background and unresolved questions about her former partner's disappearance provide the foundation for the story.

The Secretive Eleven Investigation Unit

Join the 11th Intelligence Investigation Office, nicknamed “Eleven.” Although the unit has a reputation as a dumping ground, it secretly handles serious national cases that cannot be investigated publicly, placing Rebecca and her colleagues in dangerous situations.

Six Key Male Characters

Meet six central male characters connected to Rebecca's investigations and personal journey: Axel Bullet, Ewan Reines, Liam Remington, Lorenzo Calvano, Louis Berte, and Jean Walker. Their different backgrounds range from law enforcement and intelligence analysis to politics and organized crime.

A Mystery Tied to a Missing Partner

Follow Rebecca's search for answers after her former partner vanishes and the investigation is suspiciously shut down. Her transfer to Eleven places her in a new position from which she can confront dangerous cases while the unresolved mystery remains a key part of her story.

Character Designs and Scenario by Dedicated Creators

The game features character designs by Hachi Uehara and a main scenario written by Ren Mikado, bringing together distinctive character artwork and a suspense-driven narrative.

Customizable Heroine Name

Rebecca's given name can be changed to suit the player's preference. The heroine herself is unvoiced, allowing players to personalize her name while following her perspective throughout the story.

FAQs and Guides

Q: What type of game is Sin of Astraea?

A: It is a crime-suspense romance adventure and otome visual novel that combines investigations, dramatic storytelling, and relationships with key male characters.

Q: Which platform is Sin of Astraea available for?

A: The announced platform is Nintendo Switch.

Q: Who is the main character?

A: The heroine is Rebecca Ashley, a 24-year-old detective who transfers from the city police to the Gartenas Federal Police Agency. Her given name can be customized.

Q: What is Eleven?

A: Eleven is the nickname for the 11th Intelligence Investigation Office within the Gartenas Federal Police Agency. Despite being regarded as a dumping ground, it secretly investigates serious national cases that cannot be handled openly.

Q: Why does Rebecca join the federal police agency?

A: After her former partner disappears and the investigation is abruptly closed, Rebecca joins the Gartenas Federal Police Agency and is assigned to Eleven.

Q: How many main male characters are featured?

A: The game introduces six key male characters: Axel Bullet, Ewan Reines, Liam Remington, Lorenzo Calvano, Louis Berte, and Jean Walker.

Q: Who are the main character designers and scenario writers?

A: Hachi Uehara handles character designs, while Ren Mikado writes the main scenario. Additional scenario writing is credited to Ryoko Seki and Aono Nui.

Q: Can I change the heroine's name?

A: Yes. Rebecca's given name is customizable, and the heroine is unvoiced.