MIRARTH HOLDINGS,Inc. engages in the real estate business in Japan. It plans, designs, develops, and sells 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 solar electric power generation, as well as the provision of investment opportunities and asset management services to various investors. In addition, it is involved in the construction business; hotel business, which operates accommodations under the Hotel the Leben brand name; and nursing care business that operates rehabilitation-oriented day care facilities. 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.