Thanks for the reply! :)
For now, I made a simple test level to test the character movement and all that stuff. And I tweaked some basic gameplay scripts based on the Kinematic Character Controller asset's examples.
I'm currently designing a character in VRoid Studio, to have a nice test character (instead of a simple capsule, hehe) to make the gameplay tests less boring more fun. xD
I'll make a new post when I finish designing the character and put it in the game. :)
P.S.: My game idea also includes doggies along with kitties... ;p