In some Y-centric countries, it’s very much possible for a darling to divorce their yandere, but it’s purposely made difficult thanks to the practice of Divorce Debt.
It goes like this: Divorce is very expensive, and the yandere, as master of the house, must foot the bill. Once it is finalized, the darling is escorted by police to a place called a Debtor’s Tenement, a cramped building that other divorcees live in. There, they will labor in rough and dangerous jobs to pay back their yandere ex. It can be years before this is complete, but afterwards, the darling is free... Unless they meet another yandere who wants them.