Here is an animation I made for the Arcane AnimChallenge. It took me around 30-40hours to make. I tried to animate it with constant curves since Arcane seems to be animated on 24 fps with a keyframe every 2 frames. The result is not as good looking, but, hey, I had a lot of fun. Hope you enjoy!
The on 2s is true sometimes. Depending on the action. I think, its utility for anime because they get paid differently as animators so if they could do a shot or scene with 200 or 300 less frames and it still looks, okay. They do it. The audience turns it into a principle when really its a guy just trying to save some time for sleep and showering.