Ep 20. Fuyuki Meets a Girl and Fuyuki Presents: the Amassador of Nontolma

Fuyuki Meets a Girl and Fuyuki Presents: the Ambassador of Nontolma is the 20th episode of the first season of Sgt. Frog anime series. The show revolves around the misadventures of the Keroro Platoon, a group of frog-like aliens attempting to invade Earth and the human family they live with.

In the first half of the episode, Fuyuki meets a girl named Rin who is collecting insect specimens for a science project. Fuyuki is smitten with Rin and decides to help her collect insects, much to the annoyance of Keroro who sees this as a distraction from their mission to take over Earth. However, things take a turn when Rin captures Keroro and puts him into her collection jar. Now, it's up to Fuyuki and the rest of the platoon to rescue Keroro before Rin turns him into a permanent specimen.

The second half of the episode follows Fuyuki as he invites the alien Ambassador of Nontolma to his school's cultural festival. The ambassador is impressed with Fuyuki's efforts to promote interstellar culture and decides to reward Fuyuki with the "Nontolma Prize". However, the prize is actually a trap to test Fuyuki's loyalty to Earth. Keroro and the rest of the platoon must once again save Fuyuki and show the ambassador the error of her ways.

Overall, Fuyuki Meets a Girl and Fuyuki Presents: the Ambassador of Nontolma is a charming and funny episode that showcases the quirky characters and humor of Sgt. Frog. With its mix of science fiction, comedy, and slice-of-life elements, it's no wonder the show has gained a dedicated fanbase both in Japan and abroad.