Sgt. Frog, Vol. 3: Amphibian with Attitude!

Sergeant Major Kululu-Keroro Platoon's recently recovered tactical officer-has a thing or two up his arsenal. Kululu is planning an extreme makeover for Earth, and his new weapon of mass reduction (in age, that is) will transform the entire planet into helpless children! But where can a fugitive alien find test subjects for such diabolical weapons? Where indeed but at the Hinata household!