Mimika found an interesting article online about GREE overcharging their underaged users for their services. Apparently GREE set a limit when it came to charging underaged players. Customers that are younger than 15 have a max limit of 5,000 yen a month and customers who are between the ages of 16-19 have a max limit of 10,000 yen a month. Not sure if this limit applies to international (outside of Japan) users though. If it does, some of you might get a reimbursement.
Source:
http://e.nikkei.com/e/fr/tnks/Nni20130107D07SS334.htmLinkback: https://kokoro-cafe.net/index.php?topic=182.0