User blog comment:Real cadillac/Just a tip if you lose your phone./@comment-109.14.72.199-20160611003637/@comment-26530769-20160611064804

Yes. You have to contact the support email of your OS: ad_legend_support@mynet.co.jp for Android legend_support@mynet.co.jp for iOS

More info: Help -> Transferring Data/Loss of account -> Lost access to account