Steven Universe - StevenBall!

Like her mom?

This is pretty much what it's like: kind and loving normal girl with a surprising hidden ability for combat liking a dense, yet powerful alien boy, being trained by three equally mysterious figures (Roshi, Korin and Kami…er…Popo…), while combating many threats from Earth and space. Only difference is Steven has a father when Goku's father…well…