Consumer Contract Act（Act No. 61 of 2000）.

The purpose of this Act is to protect the interests of consumers and thereby contribute to the stabilization and improvement of the general welfare and lives of the people and to the sound development of the national economy.
Business operators shall endeavor to (1) Make the contract clauses clear and plain as not to cause doubt about their interpretation; (2) Provide necessary information when soliciting consumers, based on the characteristics of the subject of the contract and in consideration of each consumer’s knowledge and experience. Consumers shall endeavor to actively use the information provided by the business operators and to understand their rights and duties and other matters set forth in consumer contracts. Contracts concluded because of unjust solicitation can be rescinded later. Contract clauses that impair the interests of consumers are void. A Qualified Consumer Organization certified by the Prime Minister can seek an injunction to protect the interests of many and unspecified consumers.