Todomomo

Rei: She and Mizumi made ginger bread houses and smashed them with the bat with nails in it.

August: The squad does secret Santa and everyone fights over getting something from August cuz he makes the best presents. He hates winter cuz he doesn't have an elemental quirk like his siblings.
Haruhi: he hates winter but since he has a fire quirk, he gets to make the best tea and stuff like that.
Hino: Hino adores winter and runs around outside because he doesn't feel the cold.
Eve: When she gets older, she ends up playing Christmas with her piano.

Kirimina

Akane and Iro both just vibe during winter. Especially when they were younger. When they were like four, Mina and Kiri dressed them up like reindeers and they loved it.

Miruhawks

Dove: Dove hates winter because she ends up sleeping in much later. She basically hibernates and it's impossible to wake her up on time. She likes Christmas tho. Her dad ends up sitting there for a few hours waiting for them to wake up before opening presents.

Iidamei

Tameiko: Tameiko makes them create certain things. Like they'll make ornaments as a family, or so funny stuff together. Ooh! Remember the whole juice making thing? They make tea and hot chocolate during winter but like, they make it taste really nice. They hand it out when it snows and even during holiday parties, instead of talking with everyone, Tameiko is inside with Iida making hot chocolate or tea.

Kamijirou

Stormi: she likes looking at the lights
Riitsu: secret Santa and making Manami calm down because someone tried the mistletoe thing with August.

Dabi x toga

Roman: He celebrates with the Todoroki family and Dove and Rosalind give him gifts. He asked Momo to make a scarf for Dove because Dove gets cold easily. He didn't know what Rosalind wanted and bought her a candy necklace as a joke before giving her a bracelet. He also took Dove ice skating and they're both really good at it. Like, Roman practices with her whenever they go, he kinda learned. He watched her dance because she's a ballerina and was practicing her balance on ice.

Nejitama

Amai: She is actually really into Christmas and helps decorate. The entire family can put lights up because of their quirks.
Phoenix: Shigaraki, his new dad, just spent time with him. He hadn't been spending time with him so he just decided to spend time with his fake son.

Mt.Kamui

Okuri.... I'm not even sure. They probably made her the tree- like she walks around with tinsel, ornament earrings, etc. a hundred percent sure her mom dressed her like that and Amai helped.

Ryushot

They have a tradition of taking family photos every year.

Megami ends up going out with Salem. Like, one time he decided to take her out on a date a week before Christmas to walk around town and see the lights and she got really excited.

Daenerys had the entire twelve days of Christmas from Phoenix and just told her parents it was her class.

HitoRei

Rosalind: she is a Christmas child instead of Halloween. She will go crazy with decorations and plans everything out.

Tetsukendou

Clarith: literally blends in with snow .
Elliot: he and his mom are the ginger bread men... get it? Get it?

SetSero

Luka: vibes
Nami: she gets dressed up like a little gingerbread girl

Shintati

Riven: his dance team is obsessed with Christmas and throw parties for it.
Manami: Manami cheats in secret Santa

Fatjoke

Spencer: Spencer cooks with dad and that's a serious moment especially cuz she can eat a lot. And they have to feed the Kirimina fam and Nejitam tam fam.

Midotsu

Mizumi: throws hands with someone. Probably her uncle.
Mariposa: Mariposa gets really excited until Aunt Ochako and Uncle Bakugo came over. Especially when the Todomomo kids come over cuz it's insanity and they host everyone. Aunt Ochako gives her cute toys tho, but there's bound to be tension between Tsu and Ochako.
Clover: Clover ends up falling in the pool-

Kacchako

Osoro: They aren't big on Christmas. It's just trees and presents, and dinner. No lights or anything.
Okimi: she got a teddy bear costume from Bakugo because he was tired of being teddy bear.

Micari

Micari: he got a bedazzle set. He likes shiny things a lot. He bedazzled his headphones.
Millie: she doesn't like getting anything except clothing tbh-

Dabi x Burnin

Pluto: moe and Pluto sit in her bed and watch Christmas Movies. He loves it and he gets to sit on moms lap or she lays her head on his lap while they watch. Dabi interrupted when Pluto was like three and he had no idea who it was but Moe said "go away" and Dabi said "I like your funny words magic man" and invited himself in-

Awase x Shiozaki

They all take Christmas very seriously and get three gifts each. Divine is the holier one and takes it more seriously than his twin, Devon. I'm debating on their little sisters name cuz rn I have Charity, Chastity, Harmoni, or Ambrosia. I think Chastity is a bit odd especially cuz of its meaning but it's pretty af.

Ragdoll x Tensei

Salem: his mom is very energetic about it. Tensei and him just like watching her have fun. Like they'll just sit there and watch her jump into piles of snow. She's adorable. They'll all sit down and watch Pitch Perfect with hot chocolate or something. He invited Meg over and Meg was confused cuz she didn't know any of the songs but the entire family knew the songs.

Aoyama x Monoma

Merli watches her dads fight over Aoyama being the star on the tree. They compromised and dressed Merli up as the star. Merli loved it.

Ok but like, Merli has 4b hair and definitely wears her hair in braids most of the time. Like, she looks like that girl from Tall Girl, the one with the pink braids? That or Flynn from Julie and The Phantoms.