www.amazon.com/Nobel-Cola-Tane-Candy-Ounce/dp/B00C21L7UW

Only problem is it's expensive. they cost 713yen on Amazon.jp not sure if you can get them to deliver dirct from them tho ( https://www.amazon.co.jp/ノーベル製菓-FD02T00014-ノーベル-コーラのたね-35g×6個/dp/B00C21L7UW)