My Adoptive Sister Always Has My Back

Back from the frontier, he searches for his seven sworn sisters. His sisters all think he's a low-ranking soldier and do everything they can to protect him, unaware that he possesses the Mystic Qi of Pure Yang and was unstoppable on the frontier, ruthless in battle! The eldest sister is a domineering CEO, sexy and poised; The second is a gentle, cultured artist, intelligent and soft-spoken; The third is a miraculous doctor, kind and dignified; The fourth is a shadowy assassin, cold and stunning; The fifth is a foreign princess, exotic and alluring; The sixth is a tech genius, brilliant and beautiful; The seventh is a mysterious little girl, lively and adorable! As for me, I wear a glorious suit of armor, my cape flying in the wind, and wield twin blades as I look down on the world!