Stand My Heroes: Warmth of Memories is a one-episode OVA drawn from a Narumi Seo story event in the Stand My Heroes mobile game, first run in April 2018. Seo has a rare condition affecting his memory, and fellow heroes from the Seo Research Laboratory appear with him. The game, an otome title from Coly, centers on Rei Izumi, a new recruit in the Ministry of Health, Labour and Welfare's drug investigation unit. Working as a scout for the freshly formed STAND, she gathers unusual agents, investigators and informants into a special team, whose first job is uncovering a harmful drug hurting ordinary people across Tokyo. Blending action, drama, mystery and psychological elements, the OVA premiered at an advance screening on January 28, 2023.