Episode Title:
Desperately Seeking Brains / The Curious Case of Aki Hinata.
Episode Description:
Desperately Seeking Brains: Things are getting difficult for Keroro who realizes that the invasion needs someone intelligent so he orders to find the fourth frog Kululu. Meanwhile, Natsumi is approached by the popular Saburo who would like to hang out in her house for some reason. Fuyuki thinks it’s because Saburo is an agent hunting aliens, but in fact it’s because he found Kululu and it was time to reunite him with the Platoon.
The Curious Case of Aki Hinata": Kululu's first invention in Pekopon is a ray that modifies the target's age and Aki is the first to try it. However, there is a time limit to change her back or she'll remain young again and Aki escaped to Fuyuki's school to pass the day.
