Fate/Grand Order -Epic of Remnant- Pseudo-Singularity III Vol. 1: The Stage of Carnage, Shimousa - Seven Duels of Swordmasters (Kodansha, 2021)

Ritsuka, a Master from Chaldea, suddenly loses consciousness and finds herself whisked away to Shimousa Province in Edo-era Japan. But it soon becomes clear she's not in her own timeline…and neither is her companion, a woman called Miyamoto Musashi. Together, they must defeat the Seven Heroic Spirit Swordmasters, a group of fearsome cursed warriors who will stop at nothing until every living thing on the planet is dead.