Thalia_Neko
Ten Thousand Club
yuh it can be something like that!On this topic, my personal input is that they wouldn't be able to manifest physically without the before mentioned 'possession' or for lack of a vessel that could withstand the power of their true essence. For the case of being able to talk to and see them. You could take inspiration from the show Bleach, in which they could communicate with their contracted spirit/demon inside their own mental mindspace in person. While they wouldn't manifest in the outside world, it would allow you to talk face to face inside your spiritual plane in which you allow them to reside and give you power in return for fulfilling your deal/promise with said demon. Anyway, it would be up to Thalia_Neko for how its interpreted in this case Zenpai
as for physically manifesting them, thats a horrible thing that you dont want to do, because it means youve released a demon into the real world lol, something Witches in the Coven fight against (well normally ) normally if theyre summoned into the real world you dont have any control over them and have no idea what their intentions are, or what they'll do
also summoning a demon usually takes an inordinate amount of magical power to do so