Kimi noticed that the presence of one of the upper rank demons disappeared. He could now sense that only one was left. The presence that disappeared was the presence of Gyokko, upper rank 5.
The demon that Muichiro had been fighting.
"He did it," Kimi thought. "I knew he could do it. This was quite an incredible and surprising turn of events."
Kimi focused all of his energy on locating the other upper rank demon demon.
"Now I just need to locate the final upper rank," Kimi thought. "Once Kimiko and I defeat it, the monsters in the village are sure to disappear as well."