FM(old times)

Mc: adopted daughter, smart, bussniss woman
Ml: smart, strong, reightful heir

Mc tries to run the household until ml returns to take over his job but ml falls in love with mc who doesn't get it and lives like that i guess.

Non blood sister x brother, no isekai

Mc: princess, kind of smart, irritating
Ml: prince, dumb, naive, trubelmaker

The siblings are brought into the world where they are engaged and they need to break it off somehow but they don't know how yet.

Princess x nobel, isekai

Mc: dumb, irritating, incompetent
Ml: dumb, 1st in love, prisoner, strong

Mc is the sister of the tyrant who kidnapped the ml, and she tries not to have emotions for the boy, so as not to kill her because of her brother. She already has feelings her ml and her brother adores her too much and wants to protect her.

Princess x prisoner prince, isekai

Mc: doctor, evil, smart
Ml: evil, king, split personality

Mc saves ml from injury and their paths start to cross more and more. Ml takes mc with him as he investiets the underground and they start to get closer as mc learns more about ml.

Doctor x nobel, no isekai

Mc: kid
Ml:

We will see

Nobel x ?, isekai?

Mc: loves her brother, smart, cute
Ml: obsessive, 1st in love

Mc manages to save her brother from ruin but ends up in a contract marriage with an obsessive ml. Mc pretends that she forgot how much she loved ml but ml did not take it as a joke.

Nobel x crown prince, isekai

Mc: slave, good looking, smart
Ml: rich, horny for mc, bold

Mc attracts the attention of ml to buy her and he has some plan to make a scandal with her and spend some time with her along the way.

Ex slave x nobel, 2nd life, 15+

Mc: beautiful, naive, hates ml
Ml: demon, 1st in love, popular

Mc and ml live together and everyone hates her because she has the most beautiful boy in town with her, but she hates him. After a few adventures, they end up together until her favorite demon saves her.

Commoner x demon, no isekai

Mc: dumb, one cage for another
Ml: softie for mc, beast side, prisoner

Mc finds herself in prison and doesn't know why she's in there, she just knows she has authority because her brother is powerful. There she meets ml who becomes obsessed with her and after she gets out he comes back for her.

Nobel x prince, isekai

Mc: aunt, dumb, poor, kind
Ml: rich, dumber, soft for nephew

Mc comes into a book where she dies because she was a bad aunt to the original ml but she becomes very close to him because he too went back to the past and intentionally thought of using mc to help him but she changed. Ml is not a blood uncle from the children and used to be soft for him but now he is soft for mc.

Low nobel x duke, isekai