My pace is improving since I've been running consistently.. haha

I am a morbidly obese runner who started running at the end of May.
At first, my 5km pace was around 8 minutes or high 7s, but now when I focus on my time, I hit 6:20.
If I just run casually, I get around 6:40 haha.
I've lost 13kg in the meantime, and while I don't necessarily feel "light" when running, I do feel like my form has become more stable.
I've run up to a maximum of 8km, and I'm planning to challenge myself with my first 10km during this holiday break.