I have used live2d with Unity in the past, so it's possible to implement that.👍 However, that is a heavy processing load and may not work properly in a slow processing environment.
Okay, don't worry about Live2D if it will make development more difficult.👍
What about the other 2 suggestions?
Can you add a zoom in and out feature for look, so we can see the whole body?
Will you add a caress and slap action for look feature, to have different reactions with the girls?
