I have a marry headcanon for these two!
In canon these two should never be together so getting married is way too delusional of me, but I like to think about it sometimes. They spent 3 years together and never wants to admit their feelings toward each other.
Natus is always 21, I like to imagine he is 24/25 when him and Themis got married. I want Themis to be 10 years older than Natus, so when they get married he is roughly about 35🥰
Their ring tattoo is designed to be barely visible. Just a simple ring, the open side means that their fate is not over yet and it is an open ending for themselves to re-interpreted. Not a time loop anymore and Themis lives this time.
If they ever get married I want them to adopt Unukalhai, I think even canonly it just makes sense Elidibus is his single dad. The only age gap between Natus and Unukalhai is a bit questionable but I see it more like Themis is the actual dad and Natus is dad's new boyfriend.😂 (Unukalhai is 10000 yrs old sho*ta but let me just imagine he's still baby)
Sorry for blabbed a bunch, I get really excited when I talk about them these days. I don't have a lot of time this month to do too much, so mostly I just write down my headcanons on my xiv twitter account. I still have quite a few more of their NSFW sketches to show, as soon as I clean those up I will post again!😊