Eternals writers Ryan Firpo and Kaz Firpo want to make a Disney Plus show
The duo have already planned what they'd focus the show on, too

Eternals Screenshot: Walt Disney Studios
Eternals may not have been the MCU’s most well-received new addition, but that hasn’t deterred its writers Ryan Firpo and Kaz Firpo from wanting to expand the story and let fans get to know the Eternals better. In a new interview with The Hollywood Reporter, the Firpo cousins talk about their desire to make a prequel series for Disney+.
In the interview, Kaz says the duo would like to “go back and do a Kingo episode in 1890s Mumbai where he is juggling his life as a movie star, dealing with Gandhi’s peaceful dissolution of the British empire in India.” He’d also like to show Thena in Greece.