Hunting Killers, Hunting Killers, Honey, Don't Be Mad

[Short Blurb] After fighting his way into the top ten of the martial world, his former fiancée married the crown prince, and the woman he was set up with became his sworn brother. Wei Zhiyin was about to marry his sword when a fiery, uninhibited beauty from the Western Regions appeared. She was gorgeous, and when she lifted her flowing skirt, he saw that his new bro was better endowed than he was. [Full Blurb] Wei Zhiyin was a swordsman. He was also a swordsman with a childhood betrothal and a wife already promised to him. After practicing swordsmanship for over a decade, Wei Zhiyin finally achieved a little success and made it into the martial world's top ten. He crossed mountains and rivers to Huadu to find his fiancée, only to hear that she'd long since become the crown princess. She and the crown prince had two children in three years, and now they were asking if he'd like to be the kids' godfather. Wei Zhiyin: "Sorry to bother you." - His former fiancée hurried to introduce him to the crown prince's unmarried, marriageable younger sister, Princess Shunning, to make up for it. They said the princess had just fought her way back from the Northern Barbarians. As a fellow martial artist, she was sure to enjoy drinking and chatting with him. The princess came at him with her sword and fought him for three days and nights. She fell in love at first sight, and lamented that they hadn't met sooner. "From now on, you're my sworn brother!" Wei Zhiyin: "Sorry to bother you." - The princess was devoted to her great cause and had no time for romance, so she introduced him to a beauty from the Western Regions whom she'd brought back from the Northern Barbarians. The beauty wore silver bells around her ankles and approached amid the flowers. Every frown and smile of hers brimmed with charm, and she could even dance with a sword to entertain her guests. Having learned his lesson, Wei Zhiyin remained unruffled. "Are you married, miss?" The beauty blushed shyly. "I'm only sixteen. What are you talking about, great hero?" Wei Zhiyin: "Then do you also want to become my sworn sibling?" Her eyes shimmered with tenderness as she loosened her robes and leaned against him, speaking softly. "I don't want to become your sworn sibling. I want to marry you." Younger love interest. A flirtatious cross-dressing prince from the Western Regions, top x an emotionally clueless straight swordsman, bottom. Chu Fang x Wei Zhiyin. I think this is supposed to be a mystery-solving story (?) but I might not be able to pull it off, so I may scrap the outline and start over, yep. Coming in eight hundred years (just kidding). The third installment in the Great Wan series. Theme: Good and evil are hard to distinguish. Not being black doesn't necessarily mean being white.