You are part demon.(this is after he healed his mother) The thing is Kurama doesn't know you yet. But little does he know you are the one who helped heal his mother.ypu used your shape-shifting to look like Yusuke. So technically he did meet you. But he did not know. He was coming to thank Yusuke but you were with him and botan. Botan and Yusuke were talking about another demon they had to fight.

Kurama: hello Yusuke, and Botan.