J-LEASE CO., LTD. engages in the provision of rent guarantee services. It operates through the Guarantee-related and Real Estate-related segments. The Guarantee-related segment offers credit enhancement in real estate rental contracts, rent guarantee services, and medical expense guarantee services. The Real Estate-related segment deals with real estate brokerage and rental management businesses. The company was founded on February 27, 2004 and is headquartered in Oita, Japan.