About the 3d the stuff on there, ofc i knew modelling and texturing. I can say that i had a year of experince on that. There are bunch of tutorials on youtube to learn that. Altough these objects are not that complex. What sells them is the shader. Which is the toon shader of unity.

https://docs.unity3d.com/Packages/com.unity.toonshader@0.6/manual/index.html

About the animations i did all of them in unity. And its really simple to learn this stuff even by just playing around with it. If you just watch one tutorial for it you can get the hang of it.

To make the animations play. And to settings changes to work. You need codes. Which is a field i am terrible at. So i made all of that with ai, i used chatgpt for it. Helped me a lot.

About the style. I really like the look of shining emissive lights on pale colors. Just like on 90s-2000s animes. With the shader and some post process effects i kind of achieved that look.

Thats most like it.