probably the same way he got the 3 new core medals hell steal them from the mantis i think the cat greed will give it to the insect one so he can get back the medals he lost
Eitherway, how many core medals is a greed composed of?, I thought that three like OOO, but Eiji took two of kazari medals, and he already had one but kazari is still alive, so he has at least four of them.