Hi ColtenT,
I'm really not sure, I've never used VoxelLand. All I can tell you is that Tenkoku uses normal Unity lights, and doesn't do anything any other light wouldn't do in that respect. Your screenshot seems like everything is still lit so I don't think it's related to lighting. It's possible it's related to reflection probes, as Tenkoku does include one... you can try turning it off under the Configuration settings, and instead using your own (or none) if necessary. However, usually in a dynamic/chaning lighting environment a reflection probe will be necessary.
I hope this helps some. Keep me updated on what you find!