乾と巽―ザバイカル戦記― [Inui to Tatsumi: The Baikal Senki] #1

This first collected volume of Inui to Tatsumi: The Baikal Senki launches a historical action series set in the rugged landscapes of Siberia and the Baikal region. It follows the intertwined fates of its protagonists amid the turmoil of early 20th-century conflicts, blending adventure with period detail. Published by Kōdansha under their Afternoon KC imprint, this edition collects the opening chapters of the saga.