They don't make animes like this anymore... I miss this series. It was reasonably kid-friendly, but had rather good depth with all the underlying themes it explored. You never knew what our proletarian heroes would encounter on their next "routine job". Together with Mirai Shounen Conan, one of my absolute favorite animes from my childhood.
Wow, I'm thrilled to have finally found this song! Though my memories of the series are hazy and I can't recall all the details, I vividly remember watching it every day when I was around 7 or 8 years old. The credit song has been stuck in my head for ages, and listening to it again now brings back all those cherished memories. Despite having searched for the series before without success, stumbling upon this song has truly made my day. Thank you for uploading it!