Tottoko Hamtarou OVA 4: Hamuchanzu no Mezase! Hamuhamu Kin Medal - Hashire! Hashire! Daisakusen

Relations

Tottoko Hamtarou
Parent story
2000
Tottoko Hamtarou OVA 3: Hamuchanzu to Niji no Kuni no Oujisama - Sekai de Ichiban no Takaramono
Prequel
2004