A trailer and promotional image announced the anime adaptation of the Duel Masters LOST ~Tsuioku no Suisho~. Promotional art also accompanied the announcement.
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Therefore, the anime is produced by JCStaff (Shokugeki no Souma, Toradora, One Punch Man) and is scheduled to premiere in the fall 2024 anime season (October-December).
Synopsis:
In Duel Masters LOST, we follow Win Kirifuda, the hero of 2022's Duel Masters WIN. In this story, however, Win, a 16-year-old teenager, has been stripped of everything—including his memories. After wandering through a universe he doesn't feel part of, he finds himself immersed in a series of confrontations to reclaim the world he yearns for.
Finally, news should arrive soon.
Source: X (Official Twitter)