Subete ga F ni Naru

Nestled on a secluded island, a specialized research facility houses Shiki Magata, a brilliant but isolated programmer. Her infrequent interactions with associate professor Souhei Saikawa and student Moe Nishinosono are disrupted when they become entangled in a perplexing locked-room murder. The incident unveils layers of concealed truths within the facility’s walls, forcing Saikawa and Nishinosono to navigate a web of secrets surrounding Magata's history and the circumstances of the crime.

The story unfolds with a focus on deduction and interpersonal dynamics amidst an atmosphere of mounting tension and suspicion. As they investigate, the characters confront not only the puzzle of the murder but also the complexities of individual motivations and the implications of concealed pasts. The anime explores themes of isolation, hidden identities, and the potential for deception within controlled environments.