A disembodied head solves Victorian murders while hunting for her own body. The mystery isn't whether she'll find it, it's what she'll have to become once she does. Aya Rindo is immortal, sharp, and completely unhinged about her predicament, which means every case is filtered through someone who has already lost everything and has nothing left to lose but answers.
A disembodied head named Aya Rindo wakes up in 19th century Europe with no memory of how she lost her body. Trapped in a ornate cage that serves as her prison and her mobility, she partners with Tsugaru Shunichi, a cynical half-demon bounty hunter, and his devoted maid Shizuku to form an unlikely detective trio. Together they travel across a continent teeming with vampires, werewolves, and creatures that shouldn't exist, unraveling murders that blur the line between human and supernatural. Each case pulls them deeper into a world of curses, vengeance, and dark secrets. Aya's sharp mind compensates for her physical limitations, while Tsugaru's brutal combat skills and demonic heritage handle what intellect alone cannot. Their investigation becomes personal as clues about Aya's missing body surface, suggesting her condition is no accident. The closer they get to answers, the more dangerous their enemies become. This is gothic mystery wrapped in dark humor, where solving one murder only opens doors to larger conspiracies lurking in the shadows of European society.