Tottoko Hamtaro OVA 3: Hamuchanzu to Niji no Kuni no Oujisama - Sekai de Ichiban no Takaramono

Released in 2004, this original video animation was produced by Shogakukan-Shueisha Productions as part of the expansive Hamtaro multimedia franchise. Created in the wake of the series' immense global popularity, this installment continues the lighthearted adventures of the Ham-Hams, focusing on themes of friendship and exploration. It served as a direct-to-video expansion of the established anime television series, providing additional narrative content that catered to the dedicated young fanbase of Ritsuko Kawai's original manga characters.

The production maintains the bright, energetic visual style characteristic of the Hamtaro aesthetic, emphasizing expressive character designs and a whimsical atmosphere. While the direction and animation teams remained largely consistent with the television series to ensure brand familiarity, this OVA specifically emphasizes high-adventure storytelling and color-saturated settings. Reception was primarily positive among the core demographic, solidifying its place within the broader Hamtaro media catalog as a classic entry from the franchise's peak period.