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English
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Part 2 of The random Crossovers
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Published:
2026-09-01
Updated:
2026-09-01
Words:
1,119
Chapters:
1/?
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Shenanigans in the Ultimate family (My AU)

Summary:

A sequel to my story Ultimate Family with new characters being added.

Chapter 1: Isa ignores Mirabel for 24 hours

Chapter Text

“What do you mean I have to ignore my sister for 24 hours?” Isa stared at the paper like it offended her.

 

Well, this was going to be hard.

 

“Esto es una tontería.(this is bullshit)” Isa said.

 

Forgive me, mi mariposa💞

 

Isa thought. 

 

…

 

Isa was chatting with Dolores happily until…

 

“Hey Issy!” Mirabel shouted from afar beside Camilo.

 

Isa didn't answer and prayed.

 

“Hey Dolores, why don't we go get something to eat? I'm getting kind of hungry.” Isa asked. 

 

“Sure, I don't mind.” Dolores agreed and the eldest twins walked off.

 

“Huh? Why didn't Isa answer?” Mirabel asked. 

 

“She probably didn't hear you.” Camilo reassured.

 

…

 

“Wanna tell me why you're ignoring Mirabel? You know she doesn't like that, right?” Dolores asked. 

 

“It's a challenge… I have to ignore her for a day because a piece of paper told me.” Isa answered. 

 

“You better make it up to her if you wanna get on her good side again.” Dolores pointed out, not amused at the challenge. 

 

“I know…” Isa muttered. 

 

Two hours later…

 

Mirabel was playing with a ginger coloured cat, but this wasn't no ordinary cat.

 

“Eres tan lindo.” Mirabel smiled as Ginger babbled.

 

Then his stomach growled. 

 

“Huh, feeding time already? I'll go make a bottle, just make sure no one sees you, okay?” Mirabel stood up and left for the kitchen.

 

…

Most people weren't home right now.

 

Except Isa and Luisa.

 

As Mirabel finished making the bottle, she went to hug Isa who pushed her off.

 

💔

 

-Did I do something wrong?

 

-why'd she do that?

 

-is she mad at me?

 

Mirabel left for her room.

 

Isa looked back and when Mirabel left. 

 

I'm so sorry, cariño…

 

Isa thought. 

 

…

 

“💞You were very hungry ain’t that right, gatito?💞” Mirabel smiled as she fed Ginger. 

 

Still though…what is he?

 

Just then three familiar kids appeared. 

 

“Kid? Henry? Frisk? ¿Qué estás haciendo aquí?” Mirabel raised an eyebrow. 

 

Both Henry and Kid looked at Frisk.

 

Frisk answered that the trio wanted to hang out with her.

 

“Eso es dulce, but no one knows about you guys or Ginger except for…Isa, but they've been ignoring me.” Mirabel frowned. 

 

“Why exactly?” Henry asked. 

 

“I don't know…she didn’t tell me what I did wrong.” Honestly, Mirabel just wanted to stay in her room and cry since her big sister was ignoring her.



At least the others weren't. 

 

…

 

It was night time now.

 

Just a few more hours…let's just go to bed and I can apologize to Mira in the morning. 

 

Isa thought before going to bed.

 

The next day, Isa found Mira in her room.

 

“Morning Mir.” Isa greeted, a little nervous. 

 

No answer.

 

I deserve that.

 

Isa thought. 

 

Wait…is she wearing longer sleeves?

 

She wondered, a little worried. 

 

“Escucha... quería disculparme(listen… I wanted to apologize)” Isa bowed their head.

 

Mirabel raised an eyebrow but didn't say anything. 

 

“I… a note had teleported in my hand saying that if I ignored you for the day, I would be rewarded and…no. I didn't use the reward for myself but I wanted to treat you for being the best Hermanita.” Isa explained.

 

“¿Una nota?” Mirabel said in confusion. 

 

“Sí.” Isa replied. 

 

Mirabel stood up from where she was and walked to her sister. 

 

“D-did you really mean it? Am I really the best hermanita?” Mirabel asked. 

 

“Both you and Luisa.” Isa spoke softly. 

 

The sleeves… I wonder, Dios I hope I'm wrong…

 

Isa grabbed one of Mirabel's arms and slowly lifted the sleeves.

 

“Isa! W-what are you doing? W-wait!” Mirabel looked away.

 

Isa gasped.

 

Cuts littered the arm and if Isa was to do the same to the other one, she bet it also had cuts.

 

“Mira… you promised me you stopped!” Isa almost cried out.

 

“Lo lamento.” The younger girl apologized. 

 

Isa frowned. 

 

“Let’s just get these clean before the others find out. And I'm taking out every possible sharp object you have here.” Isa said in a stern tone.

 

…

 

After cleaning and bandaging the cuts and also finding all the possible sharp objects.

 

“Why didn't you go get me a snack from the kitchen instead? To heal…” Mirabel asked.

 

“Aprendí por las malas que la comida de mamá no cura las heridas autoinfligidas.(I learned the hard way that mom's food don't heal self-inflicted wounds)” Isa explained. 

 

“Oh…” Mirabel looked down at her arms once again before a cry break.

 

“Um, Casita!?” Mirabel exclaimed and the house brought a bottle of almond milk and a diaper.

 

“Gracias Casita.” Mirabel smiled as she went to change ginger and fed him.

 

Just then…

 

Flash!

 

The miracle sisters saw…

 

“Rumi? What are you doing here?” Isa asked. 

 

“Heol? Where… wait, Isa? Mirabel?” Rumi noted the familiar sisters.

 

“Yes it's us, you teleported in my room.” Mirabel said.

 

Rumi's tail flickered. 

 

“Joesonghabnida.” Rumi bowed.

 

“Why are you even here?” Mirabel asked. 

 

Rumi's patterns turned pink as she adorned a shy posture.

 

Isa smirked. 

 

“Does it have something to do with Mira and Zoey?” Isa teased.

 

A blush started to form Rumi's face as her pointed ears flickered. 

 

“Dagchyeo(shut up.)” Rumi muttered in Korean.

 

Rumi then pulled out a few bands.

 

“I got these for you guys! They're lgbtq bands that you can wear, plus you said your family doesn't know what that is so it wouldn't matter!.” Rumi smiled with her fangs visible.

 

“¡Caz!” Mirabel smiled as she took the bisexual band.

 

Isa took the aromantic band.

 

“I couldn't find one for unlabeled gender so…yeah” Rumi rubbed her neck sheepishly. 

 

“Esta bien.” Isa reassured. 

 

“I got ones for your cousins as well since you saud one was bisexual and the other was gay and genderfluid?” Rumi handed those over.

 

“Yeah, thanks.” Mirabel smiled. 

 

Ginger started crawling over, wanting to be held by Mirabel who complied.

 

“That’s a big kitten.” Rumi pointed out. 

 

“He isn't really a normal kitten anyway.” Isa informed. 

 

“Also…did something happen between you two?” Rumi asked as her tail swished.

 

“jongryu ?” Isa said.

 

“Issy listened to a piece of paper that said to ignore me for a day and he will be rewarded.” Mirabel deadpanned. 

 

“I bwa(hey), it was torture for me but I wanted to treat my hermanita so…Saturday?” Isa asked hopefully. 

 

Mirabel lets out a sigh. 

 

“Saturday.” Mirabel agreed.

 

“Someone will have to babysit Ginger though…” Mirabel noted.

 

“I can do it.” Rumi volunteered.

 

“Really? Thanks!” Mirabel hugged Rumi who started purring as soon as Ginger started.

 

“Du goyangi(the two kittens)” Isa smirked. 

 

 “I better go before Bobby sends a swat team out to find me…” Rumi said her goodbyes and left.

 

“Huh…it's almost breakfast time Mir, let’s go.” Isa informed. 

 

Mirabel left Ginger napping in his bed.



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