Sgt. Frog Episode 81: Giroro, Red Days / Fight, Koyuki! Protect Your Beloved Ones
Episode 81 of 358 of Sgt. Frog, aired October 21, 2005, 25 minutes. Available with English subtitles and dub where released.
Episode summary
A scientific experiment gone wrong leaves Giroro physically attached to Natsumi`s hand on the day she`s pitching at a big softball game at school. Then, Koyuki is stalked by a ninja from space. Source: crunchyroll