Running Unity on Android with a Kotlin ap ,Unity and a Kotlin app on Same device

We have a new device for the home HW and SW. It runs Android 11 on a Meditek CPU with lots of sensors etc. The entire app is written in Kotlin and runs great. We want to add a 3D avatar with a lot of detail and be able to rotate it. We tried using the Rajawli Lib but it did not look so great. The Avatar was created from Cinema4D and we want to have the main app still doing everyt$$anonymous$$ng with the UI etc, on the screen, but when we need to show the avatar we use Unity for that portion, as seamlessly as possible. Can t$$anonymous$$s work ? any other suggestions ? ,We are building a new device for Excercise. We are in a startup. The HW is a Mediatek CPU and we wrote the entire app in Kotlin on Android 11. It runs great and looks great. In one part of the app, we need a 3D avatar of a Human with lots of details, and rotate and see all aspects of t$$anonymous$$s avatar. The avatar was created in Cinema4D . We want to display the Avatar in the app seamlessly and started with the Rajawali lib but its not looking so great. Can we run an instance of Unity for the Avatar and at the same time be running the main app in Kotlin ?