rubs my hands together i am so glad you asked.

tsukasa shows his affection through acts of service. he shows it in kind gestures from setting up alarms at midnight (because his ass is definetly in bed by 10pm sharp) to message nene and remind her to go to bed, looking over emu and buying her sweets she mentioned liking in the passing one singular time (he might have fucked up memory but he always makes sure to remember what his loved ones like, another headcanon is that he writes it all in a journal so he doesn't forget) to sneaking veggies in rui's lunches and bringing an extra water bottle because of course that purple cat was too deep into inventing to remember to drink...to sum it up tsukasa loves to scold rui and emu and banter with nene but every single action he does is full of love and care. he shows love when one of them merely coughs and suddenly practice is canceled, theyre all at his house, wrapped in soft blankets as he brews them tea with honey. tsukasa is a tsundere in a way because he will scold emu for visiting kamikou when she is not allowed to but hide her so she can stay and have lunch with the rest of wxs regardless. he will curse rui for giving him trouble and causing mischief (because he is on the disciplinary comittee after all) but will still let him go unpunished and smile fondly knowing rui is having fun in a school enviroment.

emu shows love and affection louder and with way more physical contact. she holds nene's hand during walks, swinging it back and forth (which makes nene's hand feel sore but she loves emu too much to say anything), she climbs onto rui like a koala because he is just so big and tall, he is more than happy to carry her on his shoulders so she can feel tall, she tackles tsukasa and jumps into his arms as he yells out "WAIT EMU DONT JUMP!!!!!" but catches her regardless (because he has not once let her fall). she shows her love with cute and silly nicknames, imaginary words and by bragging to everybody she encounters. miya girls must be so tired hearing about her wives for the 10th time that week but the way her eyes sparkle when she brings them up makes it just so obviously that she loves them to hell and back.

nene shows her affection way more quietly. she teases tsukasa and calls him an idiot but makes sure to stay after practice to praise him for good work as she hands him a drink. she might tease him but her love is so obvious in the way she cuddles into his side late at night during a sleepover, console in her hands as he works on a new script. they dont have to exchange any words in between them to know how much they love each other (besides, tsukasa tells her he loves her so openly and the bright pink flush on her cheeks is enough indicator she feels the same.) with rui it's a similar scenario. theyve known each other so long that theyve become a constant in each others lives, so much so that nene can be fully comfortable in rui's pressence at any given moment. i think nene is very embarassed to show affection through stuff like kisses and hugs but when she does the other three make sure to give the same energy back (and more! just where do they get so much energy...) emu is probably the one nene feels the least embarassed about showing physical affection to, maybe because of how often emu is initiating it but nene doesnt mind. how could she when emu's hands always felt so warm in her own?

rui is full of love that he shows through rather unusual but genuine ways. he sends wxs gc a picture of four bugs with a caption "us <3" and a bunch of other shit that gets him an earful from nene and tsukasa and a ton of praise from emu. rui shows his love through making inventions that will help his troupemates, using all of his knowledge to be useful to the ones he loves dearly. it's worth losing sleep over if it means seeing emu's eyes sparkle with excitement as she presses all the colourful buttons he added just for her...ah but tsukasa will scold him right? well, he supposes he doesn't mind being scolded a little...he knows very well its coming from the place of good intention. rui shows his love through sticking up for his loved ones when they're facing an obstacle and turning from a sneaky cat to a testy and defensive dog.

wonderlands x showtimes loves each other a lot and i might just be slightly autistic. i hope the wait was worth the response anon and thank you so much for the opportunity to yap. i apologize if there are any typos it is 1 am and i am sleepy zzzzz