Wakabayashi Yuuki worked in a detective agency, doing mundane tasks such as finding cats and catching extramarital affairs, until his uncle was brutally strangled in the park. The aunt asked, "Please prove that our adopted son Shishi is not the murderer." It was not to clear the name, but to confirm that the adopted son was the murderer of his father. This surprised Yuki, but the aunt said lightly: That child should hate us.
Yuki was Shishi's junior high school tutor, but she only remembered the young man's indifferent temperament. He launched an investigation and found out that Zhishi's alibi was extremely strong; an accident involving a homeless man falling from a building completely eliminated Zhishi's suspicion - traces of his uncle's death were found on the homeless man. Yuji reported the results and the case was closed, but he caught a glimpse of Shishi.
Shishi, who has grown into a young man, no longer has the slender silhouette of his youth, standing condescendingly at the top of the stairs, leaving a mark in Yuki's eyes. Zhishi was smiling, his lips curved into a crescent moon, and he smiled silently. Yuki feels strange. After tracing the remains of a shipwreck that seemed to have been washed back to the shore by big waves, many incidents surfaced - burning, drowning, falling from a building, and strangulation.
Why is there so much death around young people? Yuuki stepped into the maze of mysteries...
A breeze carrying light blows from the end. What truth is hidden on the other side of the wind?
