Peer-to-peer flea market trading apps, frequently used by young people in Japan, are becoming increasingly popular with the elderly as they look to clear away a life's worth of clutter.Once considered taboo, end-of-life preparations, or "shukatsu," are being embraced by more and more seniors who live alone, with no one to assist them and no children.Shukatsu has become a buzzword, and seminars offering advice on everything from investments and inheritance to making funeral arrangements have become commonplace.But with the touch of a smartphone flea market app from companies like Mercari Inc…READ FULL ARTICLE