The anime "Jellyfish That Cannot Swim at Night" has revealed new details, including additional voice cast members, the second promotional video, and information about the theme song. The series, set to premiere on April 6, has added Sumire Uesaka as the voice of Mii-ko, Miho Okasaki as Melo, Shina Shuto as Momoko, and Sally Amaki as Akari. The second video showcases the daily lives and struggles of the characters, including the main group formed by the anonymous artist JELEE, as they search for their personal passions.

The opening song "Irodori" is performed by singer-songwriter Kanoerana, while the ending song "One Day is 25 Hours" is by singer Tsurushima Anna. The songs recorded by JELEE were produced by 40mP, who also composed and arranged the ending theme.

"Jellyfish That Cannot Swim at Night" is an original anime directed by Ryohei Takeshita, with a script by Yuki Yaku and produced by animation studio Doga Kobo. The main cast includes Miku Ito as Mahiru, Rie Takahashi as Kanon, Miyu Tomita as Kiwi, and Miyuri Shimabukuro as Mei, as they navigate their lives and pursue their goals in the story.