Tantei ni Narutame no 893 no Houhou
探偵になるための893の方法
Nakajima Mamoru meets again by chance with Mikuriya Jin, a former university senior. Mikuriya invites him to work at his shop called "Nandemo Ya." Excited about the opportunity, Nakajima is unaware that Mikuriya is keeping a shocking secret. As he becomes more involved, he finds himself caught in a complex and unexpected situation. The story is written by Takemaru Abiko, a prominent Japanese mystery author, and is described as a dramatic and suspenseful mystery.