ارے both me and my mom were wondering-Why isn't Yuma taken over سے طرف کی the Number Cards he uses?

I'm pretty sure it's because of the key

Because he have the Zexal power like Kaito and Tron family have Crest power and photon power ,but even Yuma can't escape from Number power (Watch ep 62 and آپ will understand what i'm saying) .If آپ just a normal guy/girl ,you just a puppet under Number Monter hand .and sorry for my bad english

Yuma has the Zexal power, so he can't get possessed سے طرف کی the Numbers he uses unlike everyone else.

astrel absorbes the cards to gegane his memorys, therefore astrel pretty much keeps them from harming yuma. the downfall is yuma cannot use these cards. as for the few cards yuma owens astral pretty much blocks out. the power. the key might also block the possesive energy.

it's his golden key