On the official site for the anime adaptation of the spin-off manga, written and illustrated by Kikuhitomoji, Guraburu!It has been announced that the series will premiere this October and will be produced by the studios DMM.futureworks.
は グ ラ ブ ル 生 放送 速 報】 ア ニ メ 「ぐ ぶ る- @ ラ ン ブ ル ー フ gr ン @ @ @ (@granbluefantasy) August 8, 2020
The manga has an erratic serialization on the franchise's official website Granblue fantasy with a weekly publication. The editorial Kadokawa has published eight compilation volumes so far, the eighth in November 2019.
The promotional image shows Lyria, Vyrn and Albacore, while the promotional video stars Catalina, Eugen and others.
Source: Official Twitter account
© Cygames, Inc.