Master, Give My Senior Brother Back

My master vanished years ago, so I took on a disciple in their stead. But then I discovered my new junior sister... is actually after my beautiful master?! She admires master, master dotes on her? Wait, what about me? Oh, I'm just digging... no, I'll join in! "Master never liked my junior sister, how could they have fallen for me only after meeting me? The idea of them being together is absurd." In Yuan Qi year 9527, Lu Zhao declared righteously when faced with his junior sister's accusations, "Master is pure and virtuous, and I am devoted to the sword, uninterested in women. Master simply tea…