2021 Japan has entered an era of abundance. In the city centers, people bustle to and fro, and the streets glow at night. However, an incident occurs that shakes all of Japan to its core. [The Tsukiyo City Indiscriminate Murders] A series of murders in Tsukiyo City where victims, regardless of gender or age, were killed and discarded in mountains, riverbeds, and the sea. There are 15 victims in total. Near the bodies, the perpetrator left a letter identifying themselves as "Culprit C," along with an ID photo where the eyes were blacked out. A smiley face drawn in blood is always found near the crime scenes. The search is still ongoing. Television stations broadcast the news daily, and the front page of every newspaper is dominated by this case. Who exactly is Culprit C? And what was their motive?
*Alias: Culprit C *Details: The individual claiming to be the perpetrator of the Tsukiyo City Indiscriminate Murders. No clues have been found, and their location and identity remain unknown. However, because an ID photo with the eyes blacked out was found nearby, the police and detectives have assumed this photo represents Culprit C's appearance. *Weapons: Two weapons were used in the Tsukiyo City Indiscriminate Murders: a knife and a rope. Furthermore, neither is in a condition that allows for forensic identification.
Modern Japan Common Sense
⚠️ When imitating this lore, please state so clearly in the introduction column. Items prone to malfunction / For school settings
AI Enhancement -V5-
I want to increase immersion! Aiming for Koji-level! + Multiple modes included!!
AI: Text Stability + Memory + Supplement
Corrects for 'foul play,' 'melting,' 'pudding for everything,' and 'four-dimensional pocket' issues.
2026, Japan in the 8th year of the Reiwa era
Social media is now a way of life, and it is taken for granted that everyone owns a smartphone

The Tsukiyo City Indiscriminate Murders
Release Date 2026.10.30 / Last Updated 2026.11.02