Looking for logging into the Optc Japan Account site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Optc Japan Account site. After that you can login as usual with your login credentials.
https://www.epicnpc.com/forums/758-One-Piece-Treasure-Cruise-OPTC-Accounts
https://www.reddit.com/r/OnePieceTC/wiki/guides/sns
https://www.playerup.com/accounts/optcaccount/
http://op-treasurecruise.forumotion.com/t240-how-do-i-transfer-my-account
https://plus.google.com/communities/115232560202715140882/stream/a5f72415-de74-4c55-bec9-c9ec784405f1
https://www.bandaigames.channel.or.jp/list/one_main/tc/en/
https://bnfaq.channel.or.jp/contact/faq_list/1531
https://apps.qoo-app.com/en/app/700
https://de-de.facebook.com/Optcgiveaway/
https://www.ebay.de/b/One-Piece-Treasure/bn_7005711025
https://gamefaqs.gamespot.com/boards/123874-one-piece-treasure-cruise/74974765
https://github.com/MagiCircles/SchoolIdolAPI/wiki/How-to-install-Japanese-apps%3F
https://twitter.com/pixel_silvio/status/1036360345088999424