Tantei Kibukawa Ryousuke Jiken-tan: Vol. 3 - Shisha no Rakuen

Murders occur one after another in the paradise of an amusement park The mystery deepens... A creepy threatening letter... You must solve the case with your own hands! Several months have passed since the nightmare at Kairoukan. Ikuo, who is struggling for ideas, visits his friend, Kikugawa. At the office for the first time in a while, a beautiful secretary from the popular amusement park "Shangri-La" who calls herself "Kikukawa Haruna" comes to consult with them. The request she makes is to provide security and investigate the cult-like threatening letter sent to the amusement park and...