Ohhh noooo I never considered this possibility and I’m delighted

Yuya and Ruri would be the most doting aunt and uncle of the group. Like Yuya is constantly finding little trinkets and toys for them and playing all kinds of games with them. He’s also pretty famous and on TV all the time so the kids take a lot of pride in that (And also the fact that they know he’s actually a huge dork in real life). 

Ruri always visits with lots of snacks and has the BEST story telling voice. The kids love to get her to read various picture books for them (And they secretly think she’s a real disney princess).

Yuto is around the least and the kids know the littlest about him. He was the hardest to approach for the kids bc he looks intimidating but they very quickly warmed up to him and love when he visits. In their rebellious teenage years, he’s the one who ends up being their greatest confidante. He’s a good listener. 

Yuzu and Serena would be the Coolest Aunts. The kids look up to them a lot because they just have this effortless charisma that they gained as they got older (both very different types of course). Serena of course is mostly just very good at pretending to always know what she’s doing and the kids love it when Yuugo and Rin ask Serena to babysit them, but she’s mostly just internally screaming the whole time. 

Yuzu gets along with them easily and plays a lot of outdoor games with them. She’s also prone to get the most rowdy and drunk at a family gathering though so she’s the funniest aunt as well as one of the coolest.

some of this is strictly by looks because I’m too tired to try and match personality AND looks for all of them haha…

Yuya: resplendent quetzal (look at it I love it)

Yuto: red-winged blackbird (because the red wing… get it)

Yuugo: tree swallow (this one was hard because I really just wanted to find a fast blue bird)

Yuuri: black-shouldered kite (okay also hard but I looked for small bird of prey)

Zarc: harpy eagle (this one I thought of as soon as I saw the question because LOOK AT IT)

so cool so majestic

I don’t really know cat breeds.... but I did a little research to try and match them

Yuya: Bengal cat (apparently pretty playful and active and vocal)

Yuto: Siberian (calm and patient but affectionate)

Yuugo: Tonkinese (lively, active, loving)

Yuuri: Nebelung (more mild and wary around strangers, may watch from a distance first)

Zarc: Maine coon (adapts to many lifestyles and personalities but let’s be real I just did it for the look because Big Cat and pointy ears like his spiky hair)

Oh.. my god...

I bet Yuzu’s the blanket hog (she hates being cold while sleeping)

Yuto is the pillow stealer (he’s like really cuddly under the Edge aesthetic)

Ruri got Ray’s habit of twirling her hair when she’s bored/nervous/etc

Yuya got Zarc’s tendency to hang upside down on his bed/on a bar or something when he needs to think a lot

Rin got Ray’s curiosity and hunger to learn

Yuugo got Zarc’s shaky leg syndrome

Serena is Ray’s stern self but also got the majority of Ray’s stubbornness

!!!!

Hrrrg Yuto would be really predictable and get one of course. Something really gothic style (If I chose for him though it would probably be something like Dark Requiem’s wing design on his back)