I have a question about the scenario with fourth wife with the daughter, what if the daughter try to reach out to the Sakamaki siblings?

Admin Mawile: └(ﾟ∀ﾟ└))

Shuu:

-He doesn’t give the girl so much as a moment of his time, claiming her to be too noisy to put up with. He’s not interested in family matters, and making connections with her would only be good for those reasons. If she must be close to a brother, it can be with someone that actually cares. 

Reiji:

-For politics’ sake, he’ll be decent to the girl, putting up a front of distant politeness. He’s obligated to be polite, even if he couldn’t care less about another of his father’s spawn. She as a person has no meaning to him, and he’ll only work to foster a relationship if there’s some way he’ll benefit from it. 

Ayato:

-As another product of that man, he automatically dislikes the girl. She could be competition to him, and he’d rather deal with that matter quickly. So long as the girl pays him proper respect, he can be civil, and she may wind up as a favored target of his pranks and teasing. 

Kanato:

-If the girl can brave his… difficult personality to begin with, stand up to every temper tantrum, crying fit, and pointless complaint, there’s a chance he’ll be able to tolerate her. She’ll have to work very hard to appease him with sweets, though, and it’s still not an easy road to get on his good side. 

Laito:

-While he does like the idea of being an older brother, the girl’s existence may be more threat than benefit. As the first and only female offspring there’s no telling what their father will do with her, and the last thing Laito wants in to get mixed up in the kind of family matters that would inconvenience him. 

Subaru:

-The girl is an easy target for his anger, and her status as the youngest child makes him more irritable than ever. It’s a pain to have another one of that man’s children around, and he does nothing to hide his displeasure with her continued existence. She’s a nuisance and nothing more.