My Sister and Girlfriend Are Members of a Girl Group, I Am a Knight

I want to use this sword to protect everything I care about and the people I care about. Xu Xian: Brother, I finally found you. Sunny: Brat, I seem to really like you! Xiao Xueqiu: Xiao Yuzi, the two of us will always be best friends, right? But I kind of regret it now! Xu Yu: I don't know whether everything I am doing now is right or wrong, but I will still stick to my heart and do it. Because I want to protect you This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.