Sgt. Frog Episode 150: Giroro, An Established Time to Journey
Episode 150 of 358 of Sgt. Frog, aired March 2, 2007, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Giroro learns that he`s been promoted to Platoon Leader for another planetary invasion, and must depart that very night! How will he bid farewell to his beloved Natsumi? Source: crunchyroll