The protagonist, Kazuki Kirishima, becomes the head of the family unprepared due to the sudden death of his older brother, Mizuki. Suddenly, several uninvited guests shatter the days of peace. The story centers around a game in which the protagonists gamble their lives and dignity, and a series of mysterious events in an old mansion deep in the mountains.

The Pigeon Blood anime is from the Hidamari Magician, with a theme of horror and hunting stories.