Sgt. Frog Episode 190: Giroro, Target! Present! / Keroro, Big Birthday Party!
Episode 190 of 358 of Sgt. Frog, aired December 8, 2007, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Giroro has a hard time finding the perfect birthday gift for Natsumi, and once he finally thinks he`s got it, there`s only one left, and he`ll have to fight with a member of the Viper clan over it. Later, Giroro is overcome with jealousy and anxiety when Natsumi leaves home on her birthday, perhaps to meet up with Saburo for a date... Source: crunchyroll