It's the seventh book in The Seongjoong Series not much can be said at all as you know ever since Seonghwa changed the entire way of The Steallruim Unvrise less crime and other unlawful things have stooped in a way. But also even more things await Hongjoong and Seonghwa there's no telling what their world and the higher gods have in store for them. All we know is that these two plan to stay forever with each other and continue their roles of being the royal pain in others' lives as well.
59 parts