Shubham_Gosai_1691
just my recommendation and about 3 anime that would fit(mieruko-chan and strike the blood) , since you can integrate wraiths and vampires in the world and. "Gate: Jieitai Kare no Chi nite, Kaku" , where you can use that connection to go to another world and you know what else you put with your "creativity".
jeanpierregerardo:and 2+ that I just remembered would fit(parasyte the maxim and Puella Magi Madoka Magica) , the first one is easier, since it's like a parasite that comes from another universe, and the other similar, but I think it would be a little more difficult because of all the plot it has xD.