Kodomo Challenge Edutoy Pika-to Messenger for 4-5 year olds. This is an Edutoy from Kodomo Challenge. It's for children in their fourth year of school (Year 4). Children at this age have an increasing desire to communicate their thoughts and feelings. They may struggle with how to express themselves, or tend to use the same expressions repeatedly. By using this Pika-to Messenger, they can enjoy rich expressions, write and convey their various feelings to others, and the joy of being understood will foster a desire to write and communicate even more. Enjoy communicating with your child. Type: Words/Language Character: Shimajiro Popular Keywords: Kodomo Challenge