Wait just a second. Kishi was the employee who offered a pencil. Kishi grew up, moved to Tokyo, and started working with Chiyo...did he remember Chiyo? She didn't remember him...but the cat took her form...
Did Kishi have crush on Chiyo in high school? Did his crush unexpectedly come to work in the same office and surpassed him? Did she not even remember him?
Damn, poor Kishi. No wonder he kept running away from work.