I don't really remember much of the beginning. Ml was poisoned in the womb from his mom. FL had a master who couldn't save her n is trying to save the son. FL knew about it and after a serious attack, she secretly gave him her blood which could cure all poisons iirc. The master was worried because he knew a side effect of her doing that would lead to ml being able to hear her thoughts. Ml knew FL was pretending to be innocent and sweet but still pampered her anyway.