Seonghwa, the most trustworthy and reknowned detective-warrior is the first to be informed about an invasion on Lune, by the cruel species called "humans". Now, it is all up to Seonghwa to save his planet and keep it as a secret from humans. Detetctives from the planet Earth are scattered all over Lune and it is Seonghwa's job to save his planet. Seonghwa goes to the planet earth and meets Y/n and well.... things take an unexpected turn. Living in the dark side of Lune, Seonghwa has nothing to lose. Or does he? read more to find out an ff by- @hwasnonexistentmole and @mingiweii cw//guns,smoking,cursing,d word