-FL's dad prefers the concubine
-Concubine step mom ruins FL lead causing her mom to die.
-She gets taken care of her own grandmother after her moms death
-General ML
-ML has daddy issues
-Slow Burn romance
-Second ML pursues FL before ML
-Concubine step mom has a daughter that she uses to gain more power and connection

after watching new episodes there's also some scenes and small details/ similarities(it's niche i know)
-During ML and FL marriage, the ML pretends to be drunk
-The FL gets hungry at their consummation
-Their house gets raided in the guise of a rebellion and FL is alone while the ML has a duty somewhere so she had to deal w it alone