Sgt. Frog Episode 125: Keroro, Morally Spinning Sushi! / Keroro, The Dreaded Mosquito
Episode 125 of 358 of Sgt. Frog, aired September 1, 2006, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Keroro takes the whole platoon to get conveyor-belt sushi! And then Keroro gets accidentally turned into a half-mosquito. Will they ever be able to get him back together again? Source: crunchyroll