What's the Kodoku made of?
The reference is about the poison that made Tamahome's प्रशंसकों cry in the Tankoubon 5...In reality is not something to control the other, but to kill. But well, at first Nakago कहा he'd used the poison, but actually had thought to used another type of drug. The fact is that it was gonna get very complicated, so I left it like that...
About the elaboration of the poison, it's made of poisoned bugs...gosh, I don't know what I'm doing explaining this to आप (How am I supposed to know how it was made of?!) Anyway...and about that incense that made Tamahome feel dizzy, it's...