Youtube's algorithm recently blessed me with a channel called Zundamon's Theorem. It's a japanese channel about maths where the hosts are actually two characters which are vocal synthesizer characters (basically like Miku, I'm not sure if I can say it's like vocaloid but for speech instead of singing).

It's very cute and the creator actually adds english subs for most videos, which is impressive. Hopefully this will help me learn math terms in japanese such as 定理 (it means theorem and it surprisingly sounds like theorem, probably a coincidence). Hopefully that'll make youtube recommend me more japanese math channels.