That's nice. For Sarina Koga, is her "affiliation" with that group Volunteer work? Unpaid 'training/internship'? Extra pay beyond playing volleyball? Required by NEC as part of being paid to play volleyball? Or something else?
sitenoise it seems this "affiliation" thing in V.League is required (except for Himeji because it is considered as a club/professional team, not a corporate team).
"The players who belong to the club team are practically professional players because they have individual contracts with the team, but the players of the corporate team are mainly employee players who play while working at the company of the team to which they belong. " - Source
Arrangement for everybody else except Himeji players:
"Employee athletes are employees of the parent companies of teams such as JT, Toray, and Hisamitsu Pharmaceutical, just like general office workers and office ladies. I am obliged to comply with work rules, and I am assigned to the same departments of the company as general employees, such as the sales department and general affairs department. As a general rule, I come to work every morning at the time decided by the company, but many of the parent companies of the teams belonging to the V League are large companies, and it is understood that volleyball is prioritized even in the workplace. For this reason, work is often as simple as making copies and organizing materials. As an employee, of course, the salary is paid by the company." - Source
Arrangement for Himeji players:
"Players belonging to club teams, which have been increasing in recent years, often have professional contracts. Professional contract players have contracts with teams on an annual salary system, similar to professional baseball and J.League. Professional contract players can concentrate on volleyball, but there is no guarantee after retirement, and even if they play an active role as players for a long time, there is no pension system like professional baseball players." - Source
Which is better?:
"For those who want to play volleyball while working in a stable manner, it is recommended to aim to be an employee player of the corporate team. If you want to play favorably as a professional player, you should try an overseas league like Saori Kimura." - Source
This corporate team thing is unique to Japan huh? You can check their daily schedule here and see how their situation works. Now I know why Airi Miyabe is going to play in Japan despite saying she didn't want to play in Japan as per her Minnesota interview because she's in Himeji anyway
Off-season arrangement:
"When the season is off, professional players and contract players will renew their contracts for the next season and sign new contracts.
On the other hand, in the case of employee athletes, the contract is not renewed, and many athletes work for the company as employees during the off-season." - Source