After defeating the third Heroic Spirit Swordmaster, Ritsuka and Musashi retreat to Muramasa's smithy for a well-deserved rest. But their safe haven is sieged by two fearsome Swordmasters and they are rocked by the thunderous force of Kalasutra Hell and the mesmerizing allure of Samghata Hell. The Master of Chaldea and the wandering samurai battle to protect innocent lives…but they know too well that the brutality of these oni knows no bounds!