Following the Edo era, Haruyasu, a former samurai, finds himself lost in an unknown realm. While contemplating a revolt, he longs for demise but his attempt to assassinate someone flounders. As a result, he is defenseless against the intended target's protector, a woman with incredible therapeutic powers that Haruyasu can't resist. He resolves to survive and explore her abilities, but what will he have to give up to secure his newfound salvation?