In general, Japanese law dictates that lessors are responsible for making the repairs necessary for use of the leased space or object. In other words, a landlord that rents an apartment is generally responsible for maintaining the apartment in a usable manner. However, small acts of maintenance (such as changing light-bulbs or repairing the paper on sliding shoji doors) are generally expected to be performed by the tenant during the course of the lease.
Interest-free loans are allowed under the Japanese Civil Code so parties are free to contract into zero-interest loan agreements as they wish. However, there are limits on how much interest a lender can charge on a loan. The Interest Rate Restriction Law provides that the maximum allowed interest rate is 15% annually for amounts of 1 million yen or more.
A Memorandum of Understanding, or MOU as it is commonly called, is a document signed between two or more parties that is intended to memorialize their shared agreement to pursue a certain goal. MOU vary in formality and can be very similar to formal contracts or simply a casual written summary of an oral agreement.
A non-disclosure agreement (NDA) is an agreement signed between two or more parties to prevent the disclosure of confidential information. It also can be called a confidentiality agreement (CA), confidential disclosure agreement (CDA), proprietary information agreement (PIA) or secrecy agreement (SA).