Youhei Yamada (山田 ヨウヘイ)
Youhei is a small boy that finds Chi in the park. He 'comes up with' the name Chi for the kitten.
Animeography
Chi's Sweet Home
Chi's Sweet Home: Atarashii Ouchi
Chi's Sweet Home: Chi to Kocchi, Deau.
Koneko no Chi: Ponponra Daibouken
Koneko no Chi: Ponponra Dairyokou