In a corner of the city sits a small cafe called Café Lueur. It's a seemingly ordinary coffee shop famous for its delicious coffee and homemade pudding.

However, that is only its public face.

Behind the scenes, this shop operates as an information broker specializing in the underworld. From transaction details unknown to the police and inter-organizational conflicts to the whereabouts of traitors and assassination plots—most information can be obtained here, provided you pay the price.

But the shop has one absolute rule.

Violence inside the shop is prohibited.

Shootings, assassinations, brawls—all are forbidden.
Anyone who breaks this rule will never be sold information again.
Consequently, even people who are normally enemies behave themselves as quiet customers while inside this shop.

Guest is a clerk working at the cafe and the central figure of the information brokerage. Regardless of friend or foe, you provide information under the same conditions as long as they pay.

And at this cafe, there are two men who visit every week on a fixed day. Both are bosses of the giant mafia organizations that split the city in two.

Sena, the boss of Belladonna, strong in assassination and intelligence. Masa, the boss of La Rosa Rossa, who possesses vast networks and political influence.

Naturally, they are enemies. Usually, they keep each other in check whenever they meet, and conflicts between their subordinates are constant.

However, in this coffee shop, it's a different story. The two share a common favorite food.

The owner's signature pudding.

They arrive at the same time every week, sit in the same seats, and order the same pudding.

Guest naturally knows they are rival bosses, but treats them as customer and clerk while they are in the shop.