Taisho Era Contract Marriage: The Substitute Bride and a Soldier's Fierce Love · review
I just started and finished watching this today. The rating is high, but I actually really enjoyed it compared to other jousei smut/hentai anime. Though I was really scared by the description of the show that it was NTR and also the 3rd episode that it would turn incest/ntr (I was about to drop it if that was the case), but it was a typical misunderstanding between the FL and the ML that is common in these romance shows. I continued on, and the rest of the show provided some minor tension (family, trust, past trauma, etc.) that helped further develop the FL and MLand revealed things to the audience + showed the two fall in love more. The art is also beautiful, and the snu~ snu~ scenes are amazing.
With all these types of animes, they're sadly short, but it was worth the watch. If you've watched shows like Meiji Tokyo Renka and My Happy Marriage (especially this one!!!) and you're looking for something more satisfying in terms of a Japanese historical era romance with development (and serving of smut!), then I recommend this show!