Child of an object has to be superior in visibility

Unity Engine
1

I have a cube (cube_1), and I made it parent of another cube (cube_2).
They’re exactly in same position, they’re exactly same dimension (NOT DIMENSIONS).
Cube_1, being parent is displayed over cube_2. I notice this by tint I gave both of them.
How do I make Cube_2 display over cube_1? How do I make this cube replace visible place of Cube_1?

2

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3

You can make a second camera that has a layer mask of only cube 2.
Make sure it’s depth is higher so it’s shown in front.
Set it’s clear flags to depth only.

Camera 2 will now show cube 2 above everything else.