NHK‘s official website for the Shōnen Ashibe GO! GO! Goma-chan television anime revealed on February 26 that the anime will have a fourth season that will premiere on NHK Educational on April 2. The site also revealed on Friday and Sunday, respectively, that Sonar Pocket will perform the opening theme song “Come on! Come on!” and Yuka Ozaki will perform the ending theme song “Smile! Smile! Smile!” Ozaki performed the opening song for the third season.
The anime adapts Hiromi Morishita‘s original Shōnen Ashibe manga. The story follows the daily life of the baby spotted seal Goma-chan and its owner, schoolboy Ashibe Ashiya.
The first new anime season premiered in April 2016, and the second season premiered in April 2017. The third season premiered in April 2018. Crunchyroll streamed all three seasons as they aired in Japan.
Morishita’s manga previously inspired a 1991 television anime series and a second 1992-1993 television anime series.
Morishita serialized the original manga in Shueisha‘s Weekly Young Jump magazine from 1988 to 1994. The manga spawned a sequel titled ComaGoma in Weekly Young Jump from 2000 to 2004. A new manga series by Morishita and artist Junko Ogino debuted in Monthly Action in April 2016, and switched to Monthly Manga Town in May 2017. Crunchyroll is releasing the manga in English digitally.
Source: Shōnen Ashibe GO! GO! Goma-chan website (link 2) (link 3) via Otasuke