Tenshi no Nichō Kenjū: Angelos Armas

Tenshi no Nichō Kenjū: Angelos Armas is a supernatural, post-apocalyptic Japanese adult visual novel set in a desolate future where humanity is slowly dying, afflicted by a strange condition that stops children from being born. In the years since the last birth, the world has become home to two other types of beings: ghosts which arise from dying humans filled with negative emotions, and angels whose purpose is to send the ghosts on to the next world with supernatural weaponry. By the time the protagonist, an angel named Wim, was born, eighteen years have passed since the birth of the last human child.

In his travels, Wim meets a human researcher named Komaki Watabe who, seemingly due to her work investigating the global infertility, has become able to perceive him. Later, Wim meets Fuuko, the last human to be born. Despite being comatose due to the physical abuse she has suffered from her father, Fuuko can communicate with Wim through astral projection, and the questions she raises causes Wim to suspect that there is more to the nature of angels and humans than he has been told.

The game features voice acting for all significant characters including the protagonist and contains sexual content.