I used to love these jeans, but they got a really bad run in them that I made worse (it's a hole now) in my past mending attempts. I tried following sashiko inspired tutorials but i have trouble with even stitches so it was basically a waste of time to try in the end.
At this point i said 'screw it' and I'm going in with crazy stitching embroidery spirals while hoping that the washable marker I used in the beginning will actually come out when it's done.
If this works it'll be pretty cool at least.

Its going to look really cool. I like the swirling, its a cool contrast between the denim and the patch.
Its still looks very inspired to me (:
And best of all, its still sashiko
Yeah that's what I thought as well. But its not from my culture and I definitely dont do much sashiko mending myself, so I did not feel authorized to say as much.
My understanding is sashiko is: type of thread + repeating pattern.
Op is nailing that beautifully.
I like your idea of the spirals. It will look great. I sometimes add regular thread tiny stitches that match the denim color to add more strength.
Coming up from the wrong side, backstitch one or two threads. Space these about a half inch away from each other. They end up not showing off you don't make them too tight.
It still looks shahiko style at first glance! Came out great!
I think it’s looking great so far, and darlin’, if that pen doesn’t come out, bear in mind that there are some very expensive clothes selling in the wild that look exactly like that, brand-spanking-new. 😁 If you really just don’t like the way the ink looks, try blotting it with rubbing alcohol to remove or fade the marker!
Ooo - you could also carefully bleach-paint over the lines! I haven’t done this, so don’t have any advice. If you wanted to try it, you could likely find plenty of info on the interwebz.
It's a reverse patch with tunning stitch! I think that is still sashiko. It looks cool
Is that a Legend of Zelda fabric? So cool, the thread colour and shape work so well with the fabric! ☺️
It's from the Wind Waker!
The spirals are giving Starry Night 😮
Nice wind water fabric!
You have inspired me! I have to re-do an across the leg tear and I love the underside patch and swirl.
I’m a huge fan of r/uglymending. If it does what it needs to, it becomes its own coolness
https://preview.redd.it/mljvu7euhk8g1.jpeg?width=598&format=pjpg&auto=webp&s=f17862a74453e68fc3092fbb5942d6718c940bb8