Review Detail of Kirz_T in The Real Young Miss's Secret Identities Revealed

Im upto Chap 421 & how can they NOT know that its the ML's brother almost causing their deaths !? Theres just too much going on & NOT alot of solving .. As for FL and her Sister , like that shpuldve ended ages ago .. FL seems powerful , yet why hold back with the revenge !? Its like she likes her sister to keep pestering her .. I thought this would be 1 of those bad ass reborn karma get revenge type of novel , but its giving me "going back and forth"