S-Rank Boukensha de Aru Ore no Musume-tachi wa Juudo no Father-con deshita

[Cercamon]

Sooo, formula is the father is shown behaving like a father, more or less, then something happens that makes him or his daughters show how cool they are. After a while a new character is introduced to freshen up. Personally, it gets boring after six volumes, I barely read anymore, merely stopping at the cool parts.

Also, Meryl not wearing panties is a master's move.

 

[Adrian_V]

So i am at chaper 24 and i am starting to think only the older daughter is unaware they are adopted, Meryl seen like the idiot savant that would just think it obvious and the other is smart and has given hints she is aware of it.

And i wrong? Do they find out if they they don't know?