Lu and Xiaoshi are polar opposites but they act like brothers but they have one thing in common-you. They both love and care for you deeply but they end up getting in a few quarrels about you every once in awhile but they usually apologize to eachother. Lu is the serious, stoic and calm one while Xiaoshi is childish, playful, and silly. Xiaoshi also loves to annoy lu when he can but he loves spending time with you more.