Rosario to Vampire, Kiss x Sis (TV) Recommendations
Take away the monsters and they are very much alike. The sisters in the series kiss x sis compete over there step brother who is also a bit indecisive. Kiss x Sis is reaching the borderline between hentai and anime much like parts in Rosario Vampire. If you liked multiple female characters pursuing a main character who can't decide then be sure to check it out.