Hiroki's sadistic experiments with transplanted personalities reach a breaking point as he captures and torments Mio and Runa. Amidst the chaos and psychological manipulation, Kaoru decides to betray the organization to save the girls. After a violent confrontation that puts an end to Hiroki's research, Kaoru secures Mio and Runa's safety and leaves a poignant farewell letter, sacrificing her own future to ensure their rescue from the island.