Shichiya Karasu no Wakeari Choubo

There's a reason why things are brought into the mysterious pawn shop!? A dark light mystery! Chisato, who was fired from the company she entered as a new graduate for unreasonable reasons, visits "Pawn Shop Karasu" to cash in her parents' keepsake wedding ring to pay her rent. However, she was completely ignored by the owner, Karasujima. It's about wanting to buy Chisato's "certain ability" with money. What Karasujima receives is not gold, silver, or jewelry, but a small bottle containing a gold tooth, a bundle of duplicate keys of the customer's past lovers, and a burnt pendant. What is the mysterious shopkeeper's secret that he wants the customer's valuables rather than the valuable items...? Source: MU