Sin of Astraea brings crime-suspense romance to Switch in March 2027

Edia has put a date on Sin of Astraea (アストライアの罪咎) for Nintendo Switch: 25 March 2027, at ¥8,580 for the standard and download editions, with a special edition at ¥14,080.¹

It is the first wholly new title from MintLip+, the publisher’s women-oriented game brand, and was first announced in October 2025 as the project Astraea. Hachi Uehara is handling character design and Ren Mikado is the main scenario writer.¹

A detective posted to the department that does not exist

The protagonist is a detective who came up through the city police. When their partner vanishes and the investigation into the disappearance is quietly closed, they transfer into the Gartenas Federal Police Agency — and are immediately reassigned to the 11th Information Investigation Room, nicknamed Eleven. On paper it is a dumping ground for odd jobs. In practice it handles serious national cases that cannot be investigated in the open, and its staff are exactly as difficult as that job implies.¹

What the date actually confirms

The announcement arrived with the first look at the main characters and the product line-up on the game’s official site, which makes this a full commercial reveal rather than a teaser for a project still staffing up.¹² A fixed date five months out, with prices attached, is a different kind of claim from the usual “coming soon” — it means the game is far enough along to be sold in advance.

Our opinion

Women-oriented games have quietly become one of the steadier niches on Switch in Japan, so the interesting part of MintLip+’s debut is not the platform but the setting. A crime-suspense romance about a detective exiled into a deniable police unit is a deliberate swing at an older audience than the school-set romances the genre usually ships. The premise does real work, too: a partner who disappears, an investigation that gets closed, a transfer that looks like a demotion and functions as the opposite. That gives the romance somewhere to happen other than a classroom.¹

The risk sits in the same place. Crime suspense and romance adventure pull in opposite directions — one wants consequences, the other wants a comfortable rhythm — and the genre’s failures are almost always stories that promise the first and deliver the second. With a date, a price and a cast reveal locked in, the next thing worth seeing is a trailer with actual dialogue in it, because that is where the tone gets settled. A premise cannot do it alone.¹²