There are many similarities in the makeup and appearance of the main cast to the cast of Doraemon, which was also created by Fujio, though the content of the story is completely different.
The main character is a scientific genius boy named Kiteretsu, who has built a companion robot named Korosuke. He frequently travels in time with his friends and Korosuke in the time machine he built. Miyoko is a girl in his neighborhood who is basically his girlfriend. Tongari is his rival, who happen to share some similar traits of Honekawa Suneo. Buta Gorilla (Kumada Kaoru) is a typical neighborhood bully, who also share similar traits of Gian (Takeshi Goda) except that he often antagonizes Korosuke. (though they are in grade school).