u/Proof-Tadpole3626

hiii recently, I'm back to playing episode, and I'm starting a fresh account so my favorite story list is basically empty (planning to add my old favs in there). I've been trying to remember this one book, community story, I think there's mystery and reincarnation in it? about MC going to vacation and found a painting of them and their old partner in a museum/gallery (they used to be royals??? I recall?? I dont quite remember) but then mc decided to go on a quest to find this stranger that they believed to be their past lover, with the help of a detective/professor/someone who knows the royal's history??? my memory is so blurry imsorryyyy but you can choose the gender of both MC and LI. does anyone know the title? thank you!!!