There was an article on HiJoJo Partners on the Nikkei (leading Japanese newspaper).
HiJoJo Partners will setup funds to invest into leading unicorn private companies. Each fund will hold one private company and will be looking for investors. Valuations of pre-IPO startups tend to rise before IPO and as there is big interest to invest in such, HiJoJo Partners will provide that opportunity. HiJoJo is aiming for an operation amount of over 10 billion yen in the next year.