Sgt. Frog Season 4 Episode 169 Urere: King of Trains, Sir! / Giroro: The Beautiful Girl and the Liquid Keronian, Sir!

Urere, the popular invader, shows up again, this time with a plan he doesn't mind letting the Keroro Platoon take credit for! But while his train tracks are crisscrossing Japan, there might just be an ulterior motive hidden behind them. Later, Giroro gets turned into a liquid and helplessly tries to protect Natsumi.