Intellectual property

So I was streaming on twitch a few days ago, where one of my viewers requested that I should create some Lofi hip hop music.
Yes my stream is about making musical beats in fl studio.
Nothing big, but occasionally I stream while I do so and occassionaly I have some random viewers.

Now back on topic.

I’m currently working on a lofi hip hop track, nothing fancy, just the usual drum beat a nice bass and some asian influences using the Sakura vst.
But I also added voice clips from MEI’s ultimate in Korean, I know MEI is chinese but the Korean one sounded a lot better musically speaking.

How much big of a deal would blizzard make out of this if I decide to publish it on youtube? as in copy right claims etc.