Read this entire thread but couldn't really find an answer. Mostly talking about reducing calorie intake below your maintenance calorie to develop visible abs.

But is it possible to build muscle and lose fat at the same time (one require calorie surplus the other require calorie deficit) Sry if this sound silly.

I see, so the idea is to gain some muscle first along with fat and then lose the fat.

Haha.. No I'm not. But I'm very very skinny and like totally no muscles. Bf % is 12.5

Went for full blood check up. Some machine they use to determine body fat

The previous one I did was about 6% body fat. That time was probably 41kg. I'm at 46 kg now.