In Lost Judgment, you’ll receive the keyword “noise” by listening to people’s conversations (have a conversation bubble above them) around the block of the building containing Yokohama 99. You can find them on Isezaki Rd. near Gindaco Highball Tavern or just north of the taxi on Central Street. Open Buzz Researcher on your phone and search using the new keyword. Head to the area and look for a lady. She has blondish hair, reddish purse, red shirt and blue skirt. Press L3 and switch to the Detector. Examine her with it to trigger a cutscene.
Afterwards, head to Girl’s Bite on Ohama St. to find the woman outside with a man. Interact with them to trigger a brief scene and close the case.
Click here for the next guide on the Dastardly Detective: Grasping Attention side case!