So most of my puzzles usually have an emphasis on the visuals, which then hopefully translates itself into an interesting solve. The second part of the process usually requires a bit of polishing, which is something this puzzle could probably have benefited from a little more. The first steps might be a little fiddly but you'll soon see why this is easy. Oh well.
Numbers placed in circles must be the sum of the numbers (which can repeat) along the corresponding arrows. Enjoy!