reincarnated, in love with you

A pair of ambiguous modern female idols traveled back to the Eastern Jin Dynasty because of an accident.The two of them changed from small stars in the previous life to children of aristocratic families. Cui Xiang'an had a gender switch (female to male) because of time travel, and Ruyu was still the same Ruyu.Cui Xiangan kept the memory of the two lives, but Ruyu only had the memory of the previous life.Where will their love go, what was the sisterhood like in the past,...