(Author's Note: I'll explain about the title later at the end of chapter.)

Third Person's POV

The episode starts with Marina who was walking as she sighed seeing all of the buildings surrounding around the area nearby CiRCLE.

Marina: Why are there so many tall buildings around? The customers can't find us, and we barely get any sunlight. It's terrible! (Y/N) on the other hand... that little guy just leave without telling me. Huh?

Marina stopped walking as she saw a huge wall at the front of her as she saw a sign saying "Under Construction".

Timeskip...

Hazawa Coffee...

Right now, Marina was at Hazawa Coffee while being quite gloomy. Tsugumi saw her after she served Marina a cup of coffee.

Tsugumi: U-Um... Marina-san, what are you doing here? Shouldn't you be at CiRCLE?

Marina: Oh, come on. Even I can't find my way to CiRCLE anymore. What else should I do?

Tsugumi: (Y/N)... isn't with you?

Marina: That boy... usually, he always wait for me to go to CiRCLE, but today... there's something suspicious about him.

Then, Marina went to read the pamphlet as she was thinking what business she should open. Her eyes seems to be lifeless.

Marina: What kind of shop do I open next?

Then, the doorbell chimes as the person reveals Arisa.

Arisa: Kasumi!

Then, Arisa barges in into Hazawa Coffee screaming the cat-ear brown-haired girl's name.

Tsugumi: Arisa-chan?

Arisa: Oh, Hazawa-san. Wait, Marina-san?

Marina: What? I'm trying to have a moment.

Arisa: We've got a huge problem!

Marina: A problem? Well, I've got a problem too.

Said Marina while smiling as she act like her problem is something that she can take lightly on.

Tsugumi: What's wrong?

Arisa: It's Kasumi! No one's heard of her since morning!

Tsugumi: What?

Marina: I also didn't heard anything about (Y/N) too.

Arisa: (Y/N)... Wait... if I remember correctly... (Y/N)'s with Kasumi!

Marina: What?

Timeskip...

Right now, everyone went to look for both of you who are missing. They were working hard to look for both of you.

Ran: Well, have you found Kasumi and (Y/N)-san?

Hibiki: Not yet.

Sayo: I haven't heard from anyone yet.

Noire: Where those two could've been?!

Aya: Where had they gone?

Ghost: We're asking ourselves the same question.

Then, Sayo's phone rang as she answered the call.

Sayo: Hello?

Eve: I searched the school grounds, but I don't see her anywhere!

Said Eve who's at Hanasakigawa High School grounds calling Sayo.

Kirishima: Kasumi and (Y/N) isn't here in U.A. either!

Said Kirishima who are at U.A. High School grounds while on her phone.

Bakugo: Of course they didn't! This school only allows U.A. students here! People with no Quirk like those two aren't allowed here!

Midoriya: Kacchan, calm down!

Jean: Sorry guys, but I already went to look for Kasumi and (Y/N) at Monstadt, but they aren't here.

Moca: Not here either.

Said Moca as she was at the front of Yamabuki Bakery while eating a baguette. Kamen Rider Wizard was also with her.

Wizard: Now isn't the time to eat bread.

Moca: But I'm hungry~

Double: There's no presence of those two at Fuuto either.

Kanon: Doesn't look like they're here either.

Said Kanon as she was looking for Kasumi in the bush.

Twokaiser: We did explore every Kikaitopia, but there's no Kasumi or (Y/N) either.

Flint: Excuse me. Have you seen these two?

Then, Flint showed them a piece of paper showing the picture of both of you.

Random Kikainoid: Sorry, I didn't see them.

Yui: They're not here, either! Kasumi-chan, (Y/N)-kun, where are you?

Said Yui as she started crying.

Mugi: Yui-chan, don't cry! If you do, then you won't be able to find them.

Ako: They're not here!

Said Ako as she along with Rinko, Gaim, Ryuki, Keqing, Nepgear and Uni was looking for both of you in Neo Fantasy Online's world.

Saber: Tassel, do you know where's Kasumi-chan and (Y/N)?

Tassel: Kasumi-chan and (Y/N)-kun, huh? I don't even know those two. There's no way they could've find a way to Wonderworld.

Kokoro: They're not here!

Said Kokoro as they were looking for you and Kasumi using the submarine owned by the Tsurumaki family. OOO was also with them using his form, ShaUTa.

Blanc: They didn't visit Lowee ever.

Vert: I'll tell you when they took a visit at Leanbox.

Decade: No use. I've explored every Rider World, but I can't find both of those two idiots either.

Hu Tao: She's not at Wangsheng Funeral Parlor. When will you guys find their dead body? I wanna make some profit!

Ayaka: Kasumi and (Y/N) aren't at Inazuma either. I'm sorry.

Yukina: We've looked everywhere, but there's no trace of them. Maybe we should have them come to us.

Himari: That's easy to say! How do we do that?

Gaon: Do you have any good idea?

Yukina: To be honest, no.

Tomoe: Kasumi's obsession with sparkling, heart-pounding stuff is excessive. Can we use that?

Hagumi: Nice idea!

Himari: What about (Y/N)-san?

Tomoe: Lately, (Y/N)'s been close to Yukina. Also, he has an obsession with (insert your most favorite things here).

Yukina: W-Well, you're right.

Tomoe: Yukina, sorry for this, but... we'll use you.

Yukina: J-Just do it already. As long as we get to have them come to us, I'll be just fine.

Yukina: (Y/N)-san... where are you? I missed you already.

Then, the scene shows a method of catching birds. Under the basket, there's a bowl of rice, a box of fries and a pack of star stickers underneath the basket used for the bird trap. These are the ingredients for them to capture Kasumi.

Meanwhile, Yukina can be seen cosplaying as a cat maid while doing a cute pose with (insert your most favorite things here) beside her.

Saaya: Can we really catch them with this?

Magine: I'm sure it will work!

Tae: Shh! Quiet!

Secchan: Kaito! Use Mashin Sentai Kiramager's Sentai Gear to lure Kasumi and (Y/N)! Add more sparks to the trap!

Said Secchan who is at the secret Zenkaiger's base under the basement of Yatsude's house, Colorful.

Kaito: Alright!

Then, Kaito inserted the Sentai Gear into the Geartlinger as he begin spinning it a few times.

Geartlinger: #44 Bang!

Kaito: Yukina-san, please stand still. This won't hurt, I promise.

Ba-Ba-Ba-Bang!

Kiramager!

After a while spinning the lever, Kaito fired the gear at the trap to add the sparkling effect even more.

Yukina: (Y/N)-san! I'm here, cosplaying as a cat maid! Come and hug me!

Himari: There's people coming!

Then, 2 figures went to jump into the trap. One went into the bird trap and the other one went to jump to Yukina.

Kaito: Alright!

Kaoru: It seems they've fallen for it.

Then, the basket got lifted as it shows...

...

...

...

...

...

...

...

...Hina who were eating only the fries as she grew a pair of cat ears.

Maya: Hina-san?!

Sayo: Hina?

Den-O: Hey, that's for Kasumi! Not you!

With Yukina... it's not (Y/N) who went to jump onto her. It was Gaon who has a huge affection to animals especially cats.

Yukina: G-Gaon-san...

Gaon: Yukina-san! You're so cute! So, please dump (Y/N) and go out with me!

Vroom: Hey! Get off Yukina!

Kaito: Gaon! Get a hold of yourself!

Timeskip...

The day has reached sunset. They haven't yet to find you and Kasumi.

Lisa: It's getting dark.

Kiva: And there'll be more monster roaming around later.

Blade: We tried finding them, but the Undead are on the way. So, we had a trouble.

Chisato: Should we go home and wait for them to call?

Arisa: B-But...

Sayo: I know you're worried, but we can't keep searching.

Jiro: Besides, we should really head back before anything bad happens.

Arisa had a worried expression on her face as she's really desperate to find both of you. Then, she did something unexpected. She ran away from the group as she went to find you and Kasumi all by yourself. Rimi and Zyuran saw this as they screamed her name.

Rimi: Arisa-chan!

Zyuran: Wait up, Arisa!

Arisa: Kasumi! (Y/N)! Kasumi!

Then, she tripped and fell to the ground as she screamed out loud.

Arisa: Where the heck you guys'd go, Kasumi, (Y/N)?!

(The end...)

(Ending song...)

(Post-credit scene...)

After Arisa tripped and screamed both of you and Kasumi, her phone start ringing. When she looked at the person who called her, the name "Kasumi" can be seen.

Arisa: Kasumi?!

Arisa: Kasumi? Is that you?! What's going on?! Where are you guys?!

Arisa asked both of you worried.

Kasumi: Huh? Right now? We're at CiRCLE.

(Y/N): Don't worry about us, Arisa. We're just fine here.

Then, the scene shows both of you and Kasumi who are inside of CiRCLE. Kasumi was hugging the ancient guitar relic along with her.

How can both of you get into CiRCLE? Find out on the last chapter of BanG Dream Girls Band Party Garupa Pico Ohmori x Male Reader x Crossover!

(To be continued...)

(Author's Note: Alright, explanation time. The reason why I put "They're Missing" as the title instead of "She's Missing" is because I want both of (Y/N) and Kasumi to know how to get to CiRCLE. So, that's why I changed the title a little.

Hope this help you to solve your question. See you later... in the final chapter.)