Is Kotlin a good first language to learn?

I’m a senior and high school and I’m in a class where we can basically do whatever we want as long as it’s coding related, so right now I’m using the time to teach myself Kotlin. I’ve taken a computer science class where a learned some basic Java but that’s pretty much the only experience I have. My main goal is to develop an android app for my phone in android studio, and AS says that Kotlin is the choice for developers. My question is basically should I learn Kotlin or Java?