Series: Touhou - Sort-of-Cheating Detective Koishi: The Case of the Fairy Serial Killer – The Solution (Hirasaka Makoto)

Original title: ある意味反則探偵こいし 妖精さん連続殺人事件 解答編 (Aru Imi Hansoku Tantei Koishi Yousei-san Renzoku Satsujin Jiken Kaitou Hen)