Otoshi Deka - Keiji-san, Watashi ga Yarimashita

Otoshi Deka - Keiji-san, Watashi ga Yarimashita is a detective adventure game on Nintendo DS. The player is Jun Kawashima, a rookie detective nicknamed Aloha. The game spans four cases in a tri-step detective process: investigation of the crime's origin (what, where, who), processing the crime scene (collect evidence, recreate the crime, identify suspects), and interrogation to extract confessions. Five character modes are available during interrogation: mean, angry, positive, indifferent, or sympathetic. Gameplay emphasizes puzzle-solving through observation and deduction. The game stands out with its immersive detective simulation, multi-step logic, and voice acting in the Japanese version.