Rei Comic 5

The Detective Agency's Manju Incident (探偵社饅頭事変,) is the fifth comic in the first anthology, Rei.

Summary
Atsushi notices Kyōka eating something and asks what it is. She tells him it is a manju and points towards a box of them. He begins to wonder where they came from before being interrupted by Naomi offering to feed one to Jun'ichirō. Atsushi says Kyoka is too young to be seeing this.

Kenji enters the scene and asks if he can have a manju. Atsushi offers him one, but before he can eat it Kunikida tells him not to. He says he needs Kenji to have an empty stomach for the day's mission. Kenji reluctantly agrees not to eat the treat and instead gives it to Yosano. Atsushi offers Kunikida a manju but he declines since he has work to do.

Atsushi continues to wonder where the manju came from. Kyoka says they must have been delivered based on the onsen stamp on the packaging. Ranpo begins to laugh at Atsushi for not being able to figure out who the sender is. He says the answer is so obvious that it isn't even worth using his Ultra-Deduction ability to figure out. Slightly annoyed, Atsushi tells Ranpo that if he doesn't change his posture he will choke on the manju. Ranpo responds that he isn't stupid enough to do something like that. Atsushi asks Ranpo who the sender is, but Ranpo refuses since the sender will return any minute now.

Suddenly, Dazai bursts through the door and announces his return. When asked where he was, he says not to worry and that he had some minor business to attend to. Atsushi begins to realize the connection between Dazai's absence and the onsen manjus. Dazai confirms his suspicions, claiming that the autumn season is the perfect time for him to drown himself in an onsen. He also remarks that the owner was a beautiful woman. An angry Kunikida appears and begins to scold Dazai. Atsushi thinks to himself that between Dazai and Kukikuda, Kunikida deserves a trip to the hot springs the most.