The Killer's Cleansing Manual

Two female protagonists, happy ending, a fictional ancient detective story. The beautiful, intelligent and clever fishing princess X the killer who has been killing fish for ten years but is still affectionate. Lin Shanjuan is the number one killer in Hu City. He is top-notch in terms of appearance and ability, but his luck is not so good. Not only was he taken to Jingguo by the confused system, but he also had to fulfill the princess's wish before he could return to the modern world. Qi Zhaomian is the most noble woman in Jingguo. She not only has amazing beauty, but is also good at scheming and scheming. But her reputation is not so good. People say that she has remarried four times and is a famous princess who kills innocent people indiscriminately, is moody, and has a concubine in the mansion. She is really vicious and fickle...