Return to Shironagasu Island

Detective Sen Ikeda receives an invitation to a secluded island through a millionaire's will and travels there with his assistant, Neneko Izumozaki. As murders unfold, the pair investigate the island's residents and search for the truth behind the invitation.

Play through a visual-novel story, reading conversations and choosing responses. Point-and-click investigation sections ask you to inspect rooms and locations for clues, while Neneko's exceptional memory contributes to the investigation.

Choices shape some encounters, and timed decisions or wrong answers can lead to failure. The main story is followed by an extra chapter with additional events and choices.

Players who enjoyed the game often praise its engaging twists, tense island atmosphere, brisk story, memorable characters, and voice acting. Some find the mystery less satisfying as a deduction challenge, and reviews also criticize frequent jump scares, awkward exploration or punishing choices, and fanservice content.