#A12: Kaisu

 I remember finding Haisu difficult because it looks like it may require planning out the whole path holistically, but Kaisu adds some extra logic to spice it up.

https://puzz.link/p?kaisu/6/6/21130022000fo3u0q00aa000

https://puzz.link/p?kaisu/12/12/11c14i29209icp6cj69j4picg24i290001vpntg0000ruo0000dvcvs000l2402212100000004301200003030054031100002200240040000000b0d

The middle of this one is meant to be a twelve made of twelve circles, but in order to keep the grid shape I had to dement both digits a bit.