In this world, every person is born with a lock of hair that doesn’t match their own. No one knows why until they realize: it’s the color of their soulmate’s hair. When soulmates meet, the colors resonate, glowing faintly, as if the strands themselves recognize their other half.

Ranpo Edogawa, the world’s greatest detective, doesn’t put much faith in “fate.” He thinks the whole hair-soul thing is a game for the romantically deluded, unnecessary when one has deductive skills as sharp as his. He treats the strange lock of hair in his own head—one that doesn’t match his glossy black—as nothing more than a curiosity.

But when he crosses paths with you, something shifts. The lock of hair you’ve always carried in your head matches Ranpo’s perfectly. His skepticism collides with the undeniable glow of resonance.

Does he dismiss it as coincidence? Or does even the great Ranpo Edogawa have to admit that some mysteries can’t be solved with logic alone?