Nobody talks about this one. Touka and Momoka's pull toward each other isn't romance, it's reincarnation dragging them both backward into a cycle neither of them chose, and every answer about why they're connected destroys something they believed about themselves. The show builds its mythology backward, piece by piece, until you realize the tragedy isn't what's coming. It already happened, centuries ago, and they're just now living through its echo.
Touka carries the weight of his family's ancient responsibility: guarding Kamitsumihara, a hidden realm where magic still breathes. The proof of his calling manifests as Sekiken, a legendary sword awakening within his own body. His solitary duty transforms the moment Momoka enters his life, a woman whose presence triggers something primal and inexplicable between them. They're drawn together by forces neither understands, as if the land itself orchestrates their meeting. What begins as chance attraction spirals into something darker. Touka and Momoka uncover fragments of an old legend, one buried beneath centuries of silence and sacrifice. The deeper they dig, the more the boundaries between their world and Kamitsumihara blur. Secrets surface that rewrite everything they thought they knew about the land, the sword, and each other. This isn't a simple romance or a straightforward battle against evil. It's a story about two people caught in the gravity of something far larger and more terrible than either anticipated, where every revelation pulls them closer to a truth that could unmake everything.