are there any isekais where its a modern western girl that reincarnates in a magical asian place?
Not exactly what your looking for but the girl does get transported to ancient china.
http://www.mangago.me/read-manga/my_boyfriend_is_a_jiyiwei/
What's the yaoi where the dudes died by fucking but they only became a couple in the afterlife
shit wrong, i meant this..
http://www.mangago.me/read-manga/tenshi_no_sasayaki_wa_akuma_wo_otosu/
I'm so excited to see the result of the shoot!!