Makiko is a cheery young girl who quickly takes a liking to Shinichi Izumi and she is very helpful as seen when she walked Shinichi to the hospital to see his dad, and even chased Shinichi down to make sure he took the correct way to the coastline.

Makiko is always happy and smiling, but she don't know about the existence of the Parasites, that connect to human bodies and devour other humans.

Sometime, Makimo is a little rebellous, like when she skipped school for go on a ferry trip or shoppin