Project Sekai account on the Japan server with 235000+ crystals and 25-30 random 4-star characters.
You can also browse available accounts or check account details here:
http://103.186.215.156//game.html?name=prskenSSRWeb
http://ddinfo.xyz/game.html?name=prskenSSRWeb
If you find a specific account you want, send the account number for price confirmation and a purchase link can be arranged.