User blog comment:Naty Ranmaru Sawada/Inazuma Eleven GO Galaxy Supernova/Big Bang Recruitments/@comment-24351107-20140123145438/@comment-2235609-20140123162106

You can get the card from a team at Lost Galaxy Area, the name of the team is レアリティーズ, the other item that looks like a scale can be found at Satoko Taisen route, the team that drops the item is called Japanese Spirit (大和魂).

Kisaragi Mako in his teen form has the the keshin that you are looking for, I think she is recruitable in the community master located either in Tenma house or the soccer field near the river.