If you get some muscle on it can disguise or distract from some extra fat anyway, plus if you manage to gain muscle, without gaining too much extra fat then your body fat percentage will actually go down!
In thoery - yes, in reality - no
The gains have to be so slow, that fat increase % is low and this has to happen over a prolonged period of time.
For example:
70kg, 63kg non fat mass: 7kg fat mass, bf% 10
80kg, 72kg non fat mass: 8kg fat mass, bf% 10
To gain 9kg non-fat mass and keep fat increase to only 1kg is very difficult, and this will only maintain bf%.


