Retrospective event's official trailer of ARKNIGHTS "UNDER TIDES" is produced by Yostar Pictctures.

Original Title: Mobile Game ARKNIGHTS
Title: ARKNIGHTS Retrospective Event “UNDER TIDES” Animation Official Trailer
Narrated by:Hitomi Nabatame[Gladiia]

Published by: Hypergryph / Studio Montagne
Cooperation: Arknights Development and Management Tea