Kenja wa Nemuru: Shinjou Mimei no Houseki Jikenbo

Miharu is a kind-hearted girl facing difficult circumstances, including her mother's death and her father's financial ruin, which has left her burdened with debt. She plans to sell the only memento from her mother, a ring, to clear her obligations and begin anew. While attempting this, she meets Rintaro, a knowledgeable individual with a complex personality who specializes in jewelry. Their encounter leads to a series of events involving alchemy, enigmatic situations, and both cursed and stolen gemstones. The story blends elements of comedy, horror, and suspense.