MIRARTH HOLDINGS,Inc. engages in the real estate business in Japan. It plans, develops, sells, and trades in condominiums under the Leben and Nebel brands; and provides asset management and operation services for real estate, as well as a management service for condominiums. The company also engages in the renewable electric power generation and sales, as well as the provision of investment opportunities and asset management services to various investors. In addition, it is involved in the construction business; and hotel management business under the Hotel the Leben brand name. The company was formerly known as Takara Leben Co., Ltd. and changed its name to MIRARTH HOLDINGS,Inc. in October 2022. The company was incorporated in 1972 and is headquartered in Tokyo, Japan.