Guiltythree
A cursed demon. The rank of the monster is much more important than the class. A monster would have to reach the class of Tyrant before it can even think of challenging something 1 rank higher. And that is mainly because of the added intelligence it would have along with some special abilities all monsters of that rank have.
They enter the dream realm every time they go to sleep, but appear at/near their gateway. They can just chill or hunt, then leave the gateway when they want. But in order to advance to ascended they need to challenge their next nightmare, Idk what that exactly means but I assume there will be some issue that needs to be resolved or maybe the spell tells them directly.
hope you read this, author. Love the novel, but right now sunny needs to be very smart and farm for his life to get 7 cores. He is an awakened and the level of creatures that can give him shadow fragments is his level and above. Well i suppose that it is not easy to find 1000 creatures of any of the above levels without looong journeys or very perilous lands far away from the citatels. So what should be his plan to maximise his potential? Farm the 6000 shadow fragments right now.