I can't remember the plot but it's an older one and I'm pretty sure it has some supernatural elements. Art was beautiful, though. What I can remember is the the MC is actually the ML's reincarnated lover except this time he's born as a boy. And his name might be Ruka or Luka, or that might be the ML's name...or neither of their names. Please help me find it! It's bothering me so much that I can't remember the name of the title.
http://www.mangago.zone/read-manga/uragiri_wa_boku_no_namae_wo_shitteiru/
its this! it also has an anime!!
they're both such toxic people but their relationship is weirdly nontoxic. the communication is off the charts i love that they can actually talk to each other and get to the point.