Mullion Co., Ltd. engages in the real estate property leasing business. It operates through the following business divisions: Real Estate Leasing Service, Real Estate Securitization Service, and Real Estate Buy and Sell. The Real Estate Leasing Service division handles the acquisition of new rental properties and the maintenance of rental buildings. The Real Estate Securitization Service division invests real estate securitized products and distributes profits from rental business to shareholders. The Real Estate Buy and Sell division manages the purchase and sale of properties from and to the real estate market. The company was founded by Keiji Fukuda in November 1986 and is headquartered in Tokyo, Japan.