They're not exactly family buuuuut
They are all Hexefoxen, and all live together on the second floor of a fortune telling boutique.

Jiàn is the owner, and the "master" of the place.
He has an affinity for divination, and can tell someone's future by staring into their eyes. Eye contact IS required for his skills to activate.

Lady is in charge of greeting customers, as well as a cashier.
She has an affinity for luck, and can increase someone's luck with a handshake. Her skills mostly affect money related luck.

Sunny is pretty much the place's lackey.
He has an affinity for happiness, and physical contact with him will boost one's mood for a while. His skills affect his own mood, and being happy and motivated is pretty much his default state.

Percy is... well... He's there.
He has an affinity for aphrodisiacs, and can create pheromones that makes people hungry for love. His skills can be as much of a blessing as they can be a curse, depending on the situation, as people under the effects of his magic can get blinded by love easily.

Iris mostly works as a curse giver.
She has an affinity for poison, and can turn anything containing water into poison. Her skills can even affect moisture in the air. Though the concentration of water affects the potency of the poison, and very small quantity, while they can make someone feel uncomfortable, won't be fatal.

Together, they run a shady business that somehow always seem to be correct.
Jiàn will predict people's soon future, and the others will make sure that it happens. Often times, Jiàn will also "remove" possible "curses" and "tragedies" that he "saw in the cards" for more money (that part's all a sham). Lady will also participate by suggesting charms and the likes for clients to purchase before leaving.
All of them make sure that unpleasant people won't get too good of a fate, though...