The backstory of detective-astrologer Kiyoshi Mitarai, the main character of the puzzle novels “Tokyo Zodiac” and “House of Crooked Walls.” Tokyo, 1978. A certain man came to his senses on a bench in a completely unfamiliar place and gradually realized that he did not remember anything about his past life and did not know who he was at all. In addition, he discovered that instead of his face he saw in the mirrors something like a crimson melon. In a hopeless situation, the girl Ryoko came to his aid, they fell in love and moved in together. The unknown person took the name Keisuke Ishikawa. Seeing no other attempt to find out at least something about himself, he turned to the eccentric astrologer Kiyoshi Mitarai, establishing a friendly relationship with him. However, it was not the stars that helped, but chance: Keisuke found the first clue. In Ryoko's things. Using this key, he brought down a whole cascade of shocking discoveries. And only Mitarai, who has abilities that Keisuke had no idea about, can figure them out...