Protecting Sweetheart's Perfect Transformation

She used to be cheerful and lively, but became cold and ruthless after the arrival of a transfer student; she was once her good friend, but she didn't expect to be her biological sister; she firmly believed in her own feelings and believed that she became their sister... The flowers on the other side are blooming, and lavender is waiting in loneliness. Who can put her heart back together again? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.