My Childhood Friend Was Stolen by Other Men on a Deserted Island

A dual-perspective adult game featuring switchable playable characters: a female protagonist and her male partner. The game explores themes of cuckoldry (netorare) through two distinct viewpoints—one experiencing direct awareness of infidelity, the other discovering it gradually. Gameplay involves exploration phases where male NPCs attempt to seduce the female lead, with a "Cooperation Level" system tied to sexual encounters that affects overall progression. The narrative follows the gradual progression of sexual acts and the deepening of relationships between the heroine and the men, while the male protagonist remains largely unaware or powerless to prevent the situation.