Buzz Researcher

The Buzz Researcher (バズリサーチャー, Bazu Risāchā) is an application used by Takayuki Yagami in Lost Judgment. It was developed by Makoto Tsukumo.
==Overview==
In Judgment, Yagami would ask Tsukumo to find a target for him, which he would do by hacking into Chatter and seeing social media posts related to the target to find their location. With the knowledge gained from that, Tsukumo developed an AI to detect crime by searching Chatter's database for posts that would indicate trouble using specific keywords.
To further his research, Tsukumo installs the Buzz Researcher on Yagami's phone for field experience in Chapter 3. Yagami can enter keywords and the researcher will display posts made with the keyword, as well as the location of the device when the post was sent. A group of posts with their locations of origin being close together will denote a potential area of interest.
==Keywords==
Keyword 	Source 	Usage
arachnid man 	Unlocked by default 	Side Case: The Falling Man
body model 	Complete The Falling Man 	Side Case: The Body Model Walks at Night!!!
casino 	School Stories: Casino 	School Stories: Casino
fleeing overnight 	Side Case: Dastardly Detective: The Final Night Flight	Side Case: Dastardly Detective: The Final Night Flight
fraud 	Side Case: Takayuki Yagami: Evil Detective? 	Side Case: Takayuki Yagami: Evil Detective?
kappa 	Side Case: Where the Kappa Roam 	Side Case: Where the Kappa Roam
listening device 	Chapter 4 	Side Case: Dastardly Detective: Introduction
noise 	Completion of a "Dastardly Detective" Side Case 	Side Cases: Dastardly Detective: The Wandering Bug, Grasping Attention, Before the Torch Burns Out, The Eavesdropping Wallet, Seiryo High in Danger, From the Pit of Despair, The Secret Ingredient
Office Alone 4 	Side Case: The Café Robber 	Side Case: The Café Robber
phantom ramen stall	Side Case: The Forbidden Taste 	Side Case: The Forbidden Taste
robbery 	Side Case: The Café Robber 	Side Case: The Café Robber
saw 	Side Case: Takayuki Yagami: Evil Detective? 	Side Case: Takayuki Yagami: Evil Detective?
stalker 	Side Case: The Invisible Burglar 	Side Case: The Invisible Burglar
threaten 	Side Case: Takayuki Yagami: Evil Detective? 	Side Case: Takayuki Yagami: Evil Detective?
UFO 	Seiryo High School students at night. 	The SRC's Hunt for the Truth
Yagami 	Side Case: Takayuki Yagami: Evil Detective? 	Side Case: Takayuki Yagami: Evil Detective?
panties 	Side Case: The Filthy Four (DLC) 	Side Case: The Filthy Four (DLC)
pervert 	Side Case: The Filthy Four (DLC) 	None
Judge Creep 'n Peep	Side Case: The Filthy Four (DLC) 	Side Case: The Filthy Four (DLC). Must be used after "Ass Catchem"
flasher 	Side Case: The Filthy Four (DLC) 	None
Giant Impact 	Side Case: The Filthy Four (DLC) 	None
Ass Catchem 	Side Case: The Filthy Four (DLC) 	Side Case: The Filthy Four (DLC). Must be used after "panties"
==Trivia==
* When first installed, the keywords "police business", "suspicious person", "trouble", and "incident" are displayed alongside "arachnid man", but are never used over the course of the game.