Lookin to lose 20 to 25 kelograms of body fat fast?

I'm 15 comin on 16 and I'm mildly obease though I feel like I should be thiner and fitter. I want to lose 20 to 25 kelograms as fast as possible and willing to dedicate upto an hour each day to complete this. I'm not aiming to be the worlds best body builder though I want to lose excess body fat so I don't wanna be liftin 100 kilogram waits for hours each day.
So if anyone has tips that lose body fat fast in the core, ass and upper body it would be so much apreshiated. Thanks to all who can help
Lookin to lose 20 to 25 kelograms of body fat fast?
Post Opinion