Chochin-obake are artifact-spirit Monster Girls from the Zipangu region. Created when demonic energy fuses with the kami of a paper lantern, their attitudes differ depending on how they were handled by their human owner before monsterization: either filled with gratitude for being treated well, or possessed with obsessive, vengeful malice at being discarded callously. Either way, as former utility items, their overarching desire is to be used by men - just now in a sexual rather than luminous sense. Naturally, their fuel is now not lighter oil but semen, and they glow brighter and hotter when they receive it inside.