Under a nenki-uri contract, the thing being sold, be it land or something else, was sold to the buyer for a certain fixed interval in exchange for an agreed-upon price the seller would receive, and upon expiration of the length of time stipulated in the contract, the object would automatically revert to the control of the seller.
土地などの対象物件を一定期間に限って売却して代価を受け取り、契約期間満了後には自動的に売主に権利が戻る契約である。