The official Twitter account of Kadokawa’s Young Ace magazine has announced that Rōto Usagi will launch a new manga titled Fate/Ikustella in the magazine on June 6, 2018. The manga is a spin-off based on Marvelous and Type-Moon’s Fate/EXTELLA: The Umbral Star game, and is set in a parallel world where the Masters are babies that Servants Nero, Tamamo, and Altera have to take care of.
XSEED Games and Marvelous released Fate/EXTELLA: The Umbral Star for PlayStation 4 and PlayStation Vita in North America and Europe in January 2017.
Source: ANN