A poor young frog living in Rainbow Pond with his mother and father (a toymaker), who becomes friends with a popular and sweet girl frog named Ranatan, despite the differences in their social standings: Ranatan is the daughter of the leader of Rainbow Pond, while Demetan and his parents are tree frogs, which make them automatic outcasts in the community. Together, Demetan and Ranatan enjoy many adventures.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | tobidese ! DEMETAN | 1973-01-02 | 22 min |
| Season 1 | Episode 2 | yuuki da ! tou-chan | 1973-01-09 | 22 min |
| Season 1 | Episode 3 | makeru na ! sandantobi | 1973-01-16 | 22 min |
| Season 1 | Episode 4 | mamore ! ai no TAMAGO | 1973-01-23 | 22 min |
| Season 1 | Episode 5 | naku na ! DEMETAN | 1973-01-30 | 22 min |
| Season 1 | Episode 6 | futari bocchi no KEROKERO fue | 1973-02-06 | 22 min |
| Season 1 | Episode 7 | magokoro ni kieta nikushimi | 1973-02-13 | 22 min |
| Season 1 | Episode 8 | sayounara chiisana tabibito | 1973-02-20 | 22 min |
| Season 1 | Episode 9 | niji no ike no jigoku JANGURU | 1973-02-27 | 22 min |
| Season 1 | Episode 10 | yuujou wa umi no kanata ni | 1973-03-06 | 22 min |
| Season 1 | Episode 11 | shuusai kaeru ga arawareta | 1973-03-13 | 22 min |
| Season 1 | Episode 12 | GYA futoshi no sakurya ku | 1973-03-20 | 22 min |
| Season 1 | Episode 13 | ikiro hiroi sekai de | 1973-03-27 | 22 min |
| Season 1 | Episode 14 | wanpaku kaeru ga yatteki ta | 1973-04-03 | 22 min |
| Season 1 | Episode 15 | inochi no kawa wo torimodose | 1973-04-10 | 22 min |
| Season 1 | Episode 16 | sukue midori no inochi | 1973-04-17 | 22 min |
| Season 1 | Episode 17 | niji no ike no majin | 1973-04-24 | 22 min |
| Season 1 | Episode 18 | tobunda oozora e | 1973-05-01 | 22 min |
| Season 1 | Episode 19 | ake kibou no akari | 1973-05-08 | 22 min |
| Season 1 | Episode 20 | SHABON dama wa umi ni mukau | 1973-05-15 | 22 min |
| Season 1 | Episode 21 | naku na yuujou no KEROKERO fue | 1973-05-22 | 22 min |
| Season 1 | Episode 22 | DEMETAN umi kara kaeru | 1973-05-29 | 22 min |
| Season 1 | Episode 23 | suteru na yuuki | 1973-06-05 | 22 min |
| Season 1 | Episode 24 | heso kaeru-kun sayounara | 1973-06-12 | 22 min |
| Season 1 | Episode 25 | kesu na inochi no honoo | 1973-06-19 | 22 min |
| Season 1 | Episode 26 | makeru na yase kaeru | 1973-06-26 | 22 min |
| Season 1 | Episode 27 | NAMAZU nyuudou dai abare | 1973-07-03 | 22 min |
| Season 1 | Episode 28 | hibike ! ai no KEROKERO fue | 1973-07-10 | 22 min |
| Season 1 | Episode 29 | watase yuujou no kakehashi | 1973-07-17 | 22 min |
| Season 1 | Episode 30 | sayonara KANIKKO-tachi | 1973-07-24 | 22 min |
| Season 1 | Episode 31 | en ni makeru na | 1973-07-31 | 22 min |
| Season 1 | Episode 32 | chiisana ike no ousama | 1973-08-07 | 22 min |
| Season 1 | Episode 33 | niji no ike ga kawaku toki | 1973-08-14 | 22 min |
| Season 1 | Episode 34 | ganbare DEMETAN | 1973-08-21 | 22 min |
| Season 1 | Episode 35 | tatakae ! DEMETAN | 1973-08-28 | 22 min |
| Season 1 | Episode 36 | NAMAZU nyuudou ni makeru na | 1973-09-04 | 22 min |
| Season 1 | Episode 37 | kyoufu no jigoku JANGURU | 1973-09-11 | 22 min |
| Season 1 | Episode 38 | NAMAZU nyuudou wo yattsukero | 1973-09-18 | 22 min |
| Season 1 | Episode 39 | hibike heiwa no KEROKERO fue | 1973-09-25 | 22 min |
| Directing | Hiroshi Sasagawa | Director |
