Tokyo, Japan, 25 June 2026 – Advent, a leading global private equity investor, today announced that it has signed a definitive agreement to acquire Japan Wellbeing Corp. (“JWB”), one of Japan’s largest integrated providers of home care services, from MBK Partners. Terms of the transaction were not disclosed. This transaction marks Advent’s first investment in Japan, following the recent opening of the firm’s Tokyo office.
JWB is a leading integrated home care operator in Japan. The company was formed through the combination of Tsukui Corporation, one of Japan’s leading day care providers founded in 1969, and Soyokaze, a prominent short-stay operator. Headquartered in Tokyo and Kanagawa, the company operates more than 1,100 care locations and serves approximately 110,000 users each month. JWB offers a comprehensive range of services spanning day care, short-stay residential care, group homes, in-home nursing and care management – providing integrated support across the full home care journey.
Japan has one of the world’s largest and fastest-ageing populations, creating a significant and enduring need for high-quality, accessible home care. With its national scale, broad service offering, and long-standing operating heritage, JWB is well positioned to help meet that need while continuing to raise standards of care.
Advent will partner with JWB’s experienced management team to support the company’s next phase of growth through targeted facility expansion, extending its national reach. Through investment in staff development, operational best practices, and technology we aim to continuously improve the standard of care for users and residents across Japan.
This investment reflects Advent’s extensive experience in global healthcare, with a track record spanning more than 35 years. Over the last decade alone, the firm has invested approximately $8.5 billion across a range of sub-sectors including pharmaceuticals, healthcare technology, and care services globally.
Tomohide Handa, Managing Director and Head of Japan at Advent, said, “JWB is a scaled market leader serving one of Japan’s most important and fast-growing home care needs. With its strong platform, experienced management team, and clear mission, we believe that JWB is well positioned to become the country’s leading integrated home care service provider. We are excited to bring Advent’s operational expertise, healthcare experience, and global resources to support the JWB team as they build the next chapter of the business.”
The transaction is subject to customary regulatory approvals and is expected to close in Q3 2026.
About Advent
Advent is a leading global private equity investor committed to working in partnership with management teams, entrepreneurs, and founders to help transform businesses. With 17 offices across five continents, we oversee more than USD $94 billion in assets under management* and have made 451 investments across 45 countries.
Since our founding in 1984, we have developed specialist market expertise across our five core sectors: business & financial services, consumer, healthcare, industrial, and technology. This approach is bolstered by our deep sub-sector knowledge, which informs every aspect of our investment strategy, from sourcing opportunities to working in partnership with management to execute value creation plans. We bring hands-on operational expertise to enhance and accelerate businesses.
As one of the largest privately-owned partnerships, our 675 colleagues leverage the full ecosystem of Advent’s global resources, including our Portfolio Support Group, insights provided by industry expert Operating Partners and Operations Advisors, as well as bespoke tools to support and guide our portfolio companies as they seek to achieve their strategic goals.
To learn more, visit our website or connect with us on LinkedIn.
*Assets under management (AUM) as of March 31, 2026. AUM includes assets attributable to Advent advisory clients as well as employee and third-party co-investment vehicles.
About Japan Wellbeing Corp
Japan Wellbeing Corp. (JWB) is one of the largest providers of home care services in Japan, with an extensive network. Formed through the combination of Tsukui Corporation, a leading day care provider founded in 1969, and Soyokaze (formerly Unimat Retirement Community), a leading short-stay operator established in 1975, JWB offers a comprehensive suite of services including day care, short-stay residential care, group homes, in-home nursing and care management. Headquartered in Tokyo and Kanagawa, the company operates more than 1,100 locations across Japan and serves approximately 110,000 users each month.
For more information, visit Tsukui and Soyokaze.
Media contacts
Advent
For Japan:
Kekst CNC Minako Otani, Teruka Katayama
Email: [email protected]
All markets outside Japan:
Emily Desmier
Vice President, Communications
[email protected]
