Part of the Four Souls Jade came to modern times. Detective Conan (Shinichi Kudo) and others, together with Inuyasha and others, began a journey to find the Four Souls Jade.
At this time, a fake Four Souls Jade appeared, which can also pollute people's souls. Even Kagome can't tell the real from the fake. But the fake Shikon Tama turned into white foam with a swipe of Sesshomaru's natural tooth.
Naraku developed a powdery medicine called "Grave Cause" and sprinkled it on the real and fake Four Souls Jade. Such Four Souls are hidden in the human body and are invisible to Kagome. But the only disadvantage is that when the person with the Four Souls Jade in his body does something bad, the smell of the Four Souls Jade will be left on the "scene" that can be sensed by Kagome and Inuyasha.
So, Conan took action! Only by finding the murderer can we find the four soul jade hidden in his body.
Finally, I was surprised to find that the ingredients of "Grave Cause" were exactly the same as APTX4869 (the drug that made Conan smaller)! Kagura's body became smaller as a result.