I’ve made a MidoTaka fanfic masterpost some time ago (I need to update it some time though…), so you can check that out firstly as I listed the fics I personally liked there according to their ratings.
As for my r-18 must-reads, I can suggest you check out THIS post. And my recs for multi-chapter fics where they don’t immediately get together but it takes them a while can be found HERE. I also suggest you check out my fanfiction tag where I reblog the fics I personally like there (though there are other pairings included in the tag, you just have to look for the midotaka ones).
And lastly, if you’d also be interested, my own writing can be found HERE (I mostly wrote MidoTaka).
Hope that helps! ❤