(Y/N)'s POV

It's a stormy day at CiRCLE Live House as me and Marina was staying indoors. It's raining heavily outside, so we can't really do anything except to wait until the rain is over.

Marina: It is the Warring Girl's era.

(Y/N): Many bands struggle for supremacy over the country of CiRCLE Live House.

Marina: Today as well,

(Y/N): a storm will surely...

(Y/N) & Marina: sweep over the nation!

Then, a thunderclap can be heard with a text saying "Garupa Pico" can be seen.

Me and Marina was at the counter guarding the live house. There's only silence filling the air while Marina look quite gloomy and I can't help, but to only look around. But then, a footstep can be heard at the front door as there's 5 figures entered the live house.

(Y/N): W-What?

Marina: You guys are-

(Y/N) & Marina: Afterglow!

Marina: An all-girls rock band,

(Y/N): formed by childhood friends!

Ran: Seems like it's vacant.

(Y/N): Of course it is.

???: Wait a minute.

Marina: Who-

All of us looked at another 5 figures as it reveals more girls, but in some idol outfit.

Marina: Walking in with a bright step-

(Y/N): Pastel*Palettes!

(Y/N): Being cute isn't everything they got.

Marina: They're a certified idol band!

Aya: Always vibrant with shining colors.

She then winked as it make me blush quite a bit.

Then, the door behind the counter got kicked open as a feminine voice can be heard.

???: It's too dark. We can't practice like this!

Then, 4 more figures with a bear mascot step out of the door.

Marina: Looks like someone's was already in the studio!

(Y/N) & Marina: Hello Happy World!

(Y/N): A unique band led by Kokoro Tsurumaki!

Suddenly, a bunch of footsteps can be heard walking from the stairs.

Kokoro: Ah! It's them!

(Y/N): Who?

Another 5 figures walk up the stairs as my eyes widened seeing the band I'm really familiar with.

Marina: Those figures...

(Y/N): Giving the impression of jet-black goddesses of evil--

(Y/N) & Marina: Roselia!

Marina: A girls band that even the pros are looking out for!

(Y/N): They're also known as Author-san's most favorite band!

Marina: Who the heck is Author-san?!

Yukina: Dazzling, isn't it?

She said as the thunder brightened her and sweat appeared at my head as I have no idea what is she saying.

(Y/N): What the heck does that supposed to mean?

Then, Yukina make a shocked expression as I was confused of her.

(Y/N): What's wrong?

Yukina pointed at the window as I looked at it and...

Then, more girls entered through the window breaking the glass as me and Marina make a surprised expression.

(Y/N): Oh no! Not through the window! I just cleaned those!

The 4 girls fell down onto the floor on their feet while one of them with a cat-ear brown-haired girl fell down with her face on the floor first.

Marina: Shining stars that light up the darkness...

(Y/N): Is your heart shining yet?

Marina & (Y/N): Poppin'Party!

Marina: A supernova of personalities...

(Y/N): a bright new star for a band!

Then, they make a pose together of their arms hugging them while giving a cold stare.

It's not all, more people were entering through the front door and it's actually...

(Y/N): This is unexpected! The student of U.A. High School who recently got their hero license and has a teacher who used to be a Number 1 Hero, All Might...

(Y/N) & Marina: Class 1-A!

Midoriya: Go beyond...

Class 1-A: PLUS ULTRA!

(Y/N): W-Why are you guys here?!

Iida: Our apologies! We wanted to shelter ourselves here until the storm outside stop!

He said as he karate chop his hand up and down rapidly.

Mineta & Kaminari: T-There's so many cute girls... is this heaven?~

Then, an earphone was injected into each one of them as they yelled in pain.

Jiro: Cut it out, you two!

Then, even more people entered the live house as the place starting to be crowded.

(Y/N): W-Wait, there's more?!

Marina: N-No way! T-They're from alternate universe of Teyvat! Monstadt, Liyue and Inazuma!

Aether: Sorry for our interruption, but we need a shelter from the heavy storm outside!

(Y/N): T-That's a lot of you guys.

And there's more... as a short light brown-haired girl asked us a question.

???: Excuse us! Is this a live house for band girls to practice?

(Y/N): You got that right.

Marina: Wait, you guys are-

My eyes also widened seeing the 5 girls. They looked familiar and we shout out their band name together.

(Y/N) & Marina: HOKAGO TEA TIME?!

Yui: Oh! There's more band girls like us!

Ritsu: Nice to meet you all!

???: Stop right there!

All of us looked at the silhouette of figured revealing as a well-known hero that can transform.

Marina: N-No way...

(Y/N): The hero with a belt that can help them to transform and fight the evil...

(Y/N) & Marina: Kamen Rider Heisei Generation!

(Author's Note: Can't find any picture that suits for the story, so sorry.)

???: That's not all!

Marina: Who was that?

She then gasped seeing a figure with a fire helmet that has an "X" shape, a dragon on his right shoulder and a sword that has a fire symbol on it.

(Y/N): Kamen Rider Saber?!

(Y/N): B-But, why are you guys here?

Decade: The rain is so heavy outside, so why not we stay here for a while after defeating a lot of enemies a few moments ago?

Marina: I-I see...

Then, another 5 figures entered through the broken window as it reveals...

Marina: The 45th Super Sentai...

(Y/N): Kikai Sentai Zenkaiger!

???: Yohohoi!

All of us turn our head to see... a golden pirate with a weird looking gun on his hand.

Marina & (Y/N): Twokaiser?!

Twokaiser: Sorry for entering out of nowhere! My ship has too much water and I have decided to stay here.

All of a sudden, the lamp got turned on and everyone in the live house can see clearly now. It's because of me went to turn them on.

Kokoro: The lights are back.

Yukina: Dazzling, isn't it?

Saber: Are you okay, everyone?

Yui: Yeah! We're totally fine!

Ran: Kasumi, you're totally soaked.

Kasumi then giggled when she looked at her outfit.

Aya: Looks like it cleared up outside though.

Ran: Right after we came in too.

Aya: Yeah, it's a bit cramped here now.

Kasumi: Wanna go eat somewhere then?

Aether: Wait, what?

Midoriya: That's a good idea.

Then, some of them have their stomach grumbling.

Yui: I-I didn't get to eat any cake along our way here. Tired of running-

Azusa: We just have cake 30 minutes ago.

Yui: But I wanted more!

Mio: Good grief.

Mugi: Yui-chan, don't worry. We can go to the cafeteria and have some tea at there.

Yui: Mugi-chan...

She then hugged Mugi as I can't help, but to admit it's adorable.

Midoriya: Alright, let's visit the cafeteria before leaving.

Iida: Good idea.

Bakugo: Huh?! I thought that we're supposed to continue training!

Iida: Calm down, Bakugo-kun! As much as practice is important, you can't fight when your stomach is empty! Now, let's go!

Bakugo: Tch, fine!

All of them step out of the lobby as the head to the cafeteria leaving me and Marina all alone.

(Y/N) & Marina: T-They just leave like that?

And yes, the weather are sunny once again with bird chirping and sunlight brighting the day.

Marina: And so, the intense battle of the band with their youth on the line.

(Y/N): Takes a lunch break.

(To be continued...)

(Ending song...)

https://www.youtube.com/watch?v=f7cD1eqmwCg

Post-credit scene...

All of the people who went inside of CiRCLE Live House was at the cafeteria ordering food as I tried to serve each one of them slowly.

Kasumi: I'll go get fountain drinks!

Midoriya: Can I have some pork cutlets?

(Y/N): Coming right up!

Yui: Mugi-chan, the cake you bought are delicious are always!

Mugi: Thank you, Yui-chan!

Azusa: I wonder when will we get to practice at CiRCLE Live House?

Venti: Do you sell any wine?

(Y/N): Sorry, we don't sell any of those because there's high school girls here.

Venti: What a shame.

Agito, Kabuto & Ryuki: Let us help you!

(Y/N): T-Thank you.

I then saw the Kamen Riders also was with the others having some fun chat and doing some random things.

(Y/N): How about you, Zenkaiger? Do you guys want to order anything?

Twokaiser: Nah, we're fine.

(Y/N): Well, at least this live house is more livid than before.

I carved a smile at my face as I went to serve the customers.

(Author's Note: Well, that was quite a chaotic episode for a band girls x crossover anime fanfiction. Also, sorry for not inserting D4DJ Petit Mix and Isekai Quartet's character into this. I didn't watch the chibi anime yet. Anyway, hope you enjoy and I'll see you in the next one.)