Fushigi Yuugi, Dance with Devils Recommendations
Fushigi Yuugi and Dance With Devils are both reverse harem anime and have supernatural themes. The center of their story is also about the search for a legendary artifact that needs to be acquired/summoned and I think these two are inspired by famous real life supernatural legends. Both have a leading man that is quite emphasized with the supporting characters who are bishounens with powers who are in love with a cute (and dense) main protagonist. Get ready to be swooned by bishis.