(Author's Note: Before we begin, I just wanted to tell you that I asked someone to edit the chapter for me. I have to thank sakanadeSama for helping me to improve some of the grammar mistakes and add some changes as well. So, thanks so much for helping me, man. And... yeah. Let's get right into the chapter!)

(Y/N)'s POV

From what I have known, I have all of the band members of Poppin'Party and Pastel*Palettes as my yandere girlfriends.

(Y/N)'s House

Tuesday: Night

Right now, I was in my room laying down, I'm not really that sleepy yet. My homework is already done since I wanted to be more productive. I was about to do some commissions in a gacha game that I play until I heard a notification from my phone.

I went to check and there's a new message from Rinko.

Rinko: Hey (Y/N). How are you? I'm just checking in on my boyfriend.
｡◕‿◕｡

(Y/N): I'm doing fine.

Rinko: Good to hear. Anyway, Roselia is having a live performance on Friday night. You think you could come to CiRCLE to watch us preform?

(Y/N): What are you talking about? Of course I will!

Rinko: Fufu~ I knew you would. Hope to see you there sweetheart!. ʘ‿ʘ

Dang, Rinko sure is cute despite her being secretly a yandere.

Rinko: I'm going to sleep now. Good night, (Y/N). Love you. XOXO

(Y/N): Good night, Rinko.

She went offline right after and I decided to chat with Sayo because I saw her active on messenger.

(Y/N): Hey Sayo. Are you busy? Can we chat for a bit?

Sayo: You should be sleeping by now. I don't want our boyfriend to be sleepy at school tomorrow.

(Y/N): Then, you shouldn't be messaging me either and shouldn't you be sleeping as well?

Sayo: I'm practicing my guitar for Roselia's new song. What are you saying?

(Y/N): Hehe, you do care about your band, huh? That's what I really like about you.

Sayo: Why don't you come to our concert later and cheer for us, instead of just saying it in a message?

(Y/N): Rinko did inform me about it, and I'll be there for you girls.

Sayo: That's good. Alright, I'm going offline now. You should go to sleep. I care about you, so don't cheat on us or else...

(Y/N): I promise I won't. Mark my words.

Sayo: Good night, (Y/N). I love you.

(Y/N): I love you too, Sayo.

I turned off my phone and slept for the night to get myself ready for school.

Timeskip brought to you by Chibi (Y/N) getting chased by spirits summoned by Chibi Necromancer Ako.

CiRCLE Live House

Friday: Night

As promised, I went to CiRCLE for Roselia's live performance for the night. I entered the live house and the place is packed with lots of people.

(Y/N): I didn't expect Roselia to have this many people devoted to them.

I said to myself as I paid for the tickets and headed towards the stage underground.

Yukina: Good evening. We are... Roselia.

Yukina took a quick glance at me and gave me a little smile. Then, she changed back to being serious and introduced her band members.

As usual, they did their solo when Yukina introduced each one of them. After that, she began the performance.

Yukina: Let's begin. R!

As much as I'm concerned about the song title which is only the 18th letter of the alphabet, I'm not complaining. The song's quite a banger.

Once the song ends, they take a short break before moving to the next song.

Yukina: Please listen to our next song. Neo-Aspect!

Now, that... is what I call music. It gives me the feeling when one is connected with nature. I imagined myself mesmerized under the beautiful evening sky while listening to the song.

(Y/N): I'm going to buy their album later and play the song while doing chores.

I said to myself as the fans cheered for them while swinging their glow sticks.

Yukina: Thank you for coming to our concert tonight. We are... Roselia. See you next time.

The live performance has come to an end as everyone begins to slowly leave the stage. As for me, I decided to wait for Roselia to greet them. They finally stepped out of the live house and I called out to them.

(Y/N): Hey, Roselia!

They stopped walking and diverted their eyes to me.

Sayo: (Y/N)!

Lisa: Looks like you did what we wanted~

(Y/N): Of course I do. The four of you are my girlfriends after all.

Yukina: Hope you're doing this not only because of us, but for our songs as well.

(Y/N): Of course I do, and I will admit, your songs are what makes you the best band ever.

Yukina: Thank you.

She said to me while smiling, and then the purple-haired girl named Ako, if I'm not mistaken, spoke to me.

Ako: You know, Rin-Rin did tell me about you.

(Y/N): You did?

I asked Rinko while pointing at Ako.

Rinko: Yeah, she wanted to know about you, so I told her.

I'm so confused here. If Rinko was a yandere, then how come she's not threatening Ako when she asks about me?

Ako: Me and Rin-Rin are best friends! We met online and played online games together! Look at this!

She showed me the pictures on her phone of her as a necromancer and Rinko being a fire wizard.

(Y/N): Whoa! That's so cool!

Ako: I know, right? Both of us met and worked together on NFO! I'm a necromancer while Rin-Rin is a fire wizard!

(Y/N): NFO? What is that?

Rinko: Neo Fantasy Online. It's an RPG game on the computer. Me and Ako-chan would complete quests and grind in the game when we're not busy with real life work.

Sayo: I also played the game as well. My class is Knight.

Hearing that the three of them play an RPG game together makes me so happy.

(Y/N): I'm so excited! Glad to know that you girls are gamers as well! It's so rare to find one like this!

Sayo: Well, you only grind in gacha games on your mobile phone and nothing else.

What Sayo said was a fact even if it hurts me.

(Y/N): Does it look like I have money to buy a PC set? Also, you know that I need to spend time with you equally right? After all, you are my girlfriends.

Sayo: Right, right. You told us this...lots of times actually...

Yukina: Anyways, we should head home now. It's getting late.

(Y/N): Yeah, I agree.

Both Yukina and Lisa kissed me on the cheek before going home by themselves, leaving me with only Sayo, Ako and Rinko.

After a while, Ako stopped dead in her tracks as she turned sideways.

Ako: Well, my house is this way! Bye-bye!

(Y/N): Bye-bye, Ako.

That only leaves me and my student council girlfriends alone. As we were walking, Rinko asked me.

Rinko: What do you think of Ako-chan?

(Y/N): Umm...

I have no words to answer her.

(Y/N): I think she's just an innocent young girl who is very imaginative.

Sayo: Are you interested in Udagawa-san?

(Y/N): What? Of course not! She's still an immature high school girl!

Rinko: Fufu~ You're lying, aren't you?

Sayo: You can't hide it from us.

She whispered in my ears.

Rinko: I believe Ako-chan is jealous of us. I wouldn't really mind if she joined in as well.

(Y/N): Ako? That first year high schooler girl? Joining the harem?

Rinko: Yes (Y/N). If that happens, then would accept her immediately.

Sayo: Shirokane-san, what were you thinking?

Rinko: I know what I'm doing, Hikawa-san. You should trust me as well.

As I was walking with Sayo and Rinko back to their homes I said to myself. "Oh boy. If that's the case then I better get ready if it does happens" While looking up at the evening sky.

Ako's POV

Once I head inside my home, my mind flashbacks to when I first met (Y/N)-san.

Ako: What is wrong with my chest? Does it have something to do with (Y/N)-san being a boyfriend with everyone in Roselia except me?

I put the thoughts of (Y/N)-san aside and went to take a bath.

Timeskip brought to you by Chibi (Y/N) and Chibi Poppin'Party hiking.

Sunday: Morning

The day has come, where I would finally get to go outside, touch some grass, get exposed to the sunlight you know... those things you do outside in the morning.

I had plans with Poppin'Party to go for a hiking trip together.

Flashback...
A few days before...

I was at my house, watching some TV because the girls are busy with their lives when all of a sudden I got a notification message.

Kasumi: (Y/N)-kun! How are you?

(Y/N): I'm fine, Kasumi.

Kasumi: I want to invite you to go hiking with Poppin'Party! I think it would be a good opportunity for us if you could come along!

(Y/N): Sounds fun! So when are you girls going?

Kasumi: On Sunday! We already discussed this and agreed on it as well! So we want you to come with us!

(Y/N): Sure, I'll join you girls.

Kasumi: Yay! I have to go now! See you later, and don't ever cheat on us!~

(Y/N): Bye-bye Kasumi. Don't worry I won't.

Hiking, huh? That doesn't sound too bad. Besides, there's nothing wrong with doing some fun activities like this once in a while. Besides, it's not like I have anything better to do during the day.

Before I start making preparations, I messaged Rinko to inform her about the hiking trip.

(Y/N): Hey, Rinko.

Rinko: Hello, (Y/N). What can I help you with? (人 •͈ᴗ•͈)

(Y/N): I made plans with Poppin'Party to go on a hiking trip for a date. I just thought I'd let you know.

Rinko: Hiking, huh? That's so exciting.

(Y/N): Why don't you come with us later?

Rinko: Sorry, but I can't. I'll be busy that day with Roselia's band rehearsal.

(Y/N): Oh... I see well Alright then. I'll buy you and the others souvenirs.

Rinko: Really? I would very much appreciate it! (≧▽≦)

(Y/N): I'll be going now. I need to prepare for the day.

Rinko: Bye-bye, (Y/N)~ (◠‿◕)

Rinko and I ended our conversation as I began preparing.

(Y/N): Alright! Let's go!

Flashback ends...

After a while, I finally got all set up and made my way towards the train station. Luckily, I made it in time and saw Poppin'Party there as well.

Kasumi: (Y/N)-kun!

She ran to me and hugged me tightly.

Arisa: Kasumi! D-Don't hug him like that!

(Y/N): It's fine, Arisa.

Saaya: Have you got all of your equipment ready?

(Y/N): Indeed, I do. I also brought some food and drinks for us just in case we get hungry.

Rimi: Fwaaah! I've been looking forward to our time together!

Tae: Me too.

Kasumi: Alright everyone! Let's give our all to the top!

(Y/N), Tae, Rimi, Saaya, Arisa: Yeah!

After waiting for awhile the train is finally here.

We boarded the train and headed to the place where we will be hiking. During our way there, I listened to some music from Spotify. Yeah, I used the app despite the annoying ads saying how annoying their ads are.

(Editor's note: Should've gotten premium then.

Author's Note: Do I look like I have money? -_-||)

After an hour or two, we finally arrived at our stop. We went down from there and walked all the way to the mountain as planned. There's a sign telling us where the road path for hikers are making it easier to navigate up to, and down from the rail and where it ends.

(Y/N): Here we are girls.

Tae: I can't wait!

Rimi: Me too.

Arisa: Today's going to be pretty exhausting. So give it your all!

Kasumi, Tae, Rimi, Saaya: Yeah!

(Y/N): Y-Yeah.

Arisa: Louder! I thought men like you are supposed to be strong for their girlfriends!

Arisa scolded me.

(Y/N): ALRIGHT EVERYONE!! I WANT EVERYONE INCLUDING MYSELF TO GIVE OUR ALL!

Arisa: There you go!

And the hiking begins. The expedition took us a few hours to reach the top of the hill.

Some of us were already tired, so we took a short break before continuing. After a long walk up the hiking trail, we finally saw the top of the hill. It carved a huge smile on our faces knowing that we were just that close.

We finally reached the top of the mountain and the view was so beautiful.

Poppin'Party: Woah!

(Y/N): It's so beautiful!

Kasumi: YAHO!

She yelled out loud at the top of the mountain.

(Y/N): Whoa! We did it!

Rimi: We... We made it to the top. I'm so proud of myself you guys!.

(Y/N): Us too, Rimi.

But then our celebration got cut short when our stomachs started growling.

Saaya: I think it's time for us to celebrate by having lunch up here.

Arisa: Good idea. I'm hungry.

We then had a picnic on the top of the mountain while enjoying the beautiful scenery.

Rimi: (Y/N)-kun, would you like some?

(Y/N): Sure.

I took some cornets from her and ate them.

(Y/N): I can't believe that you girls are the only ones who would do things like this for me.

Kasumi: We dont mind.

Saaya: Yeah. Besides it's never a good idea to be inside all the time you need to experience the outdoors more.

Rimi: We're so happy that you joined us.

Arisa: Hope you had fun with us.

(Y/N): I definitely did Arisa. And I won't hesitate to go on another trip with my girlfriends if possible.

We all laughed together and continued eating.

After we had our picnic, we cleaned up the mess and headed back down to the starting line. I went to buy some souvenirs for my other girlfriends and we headed to the train station and traveled back to our homes for the day. It was quite tiring to be honest, but I enjoyed it with the others.

Third Person's POV

Meanwhile...

While we were going on a hiking trip with Poppin'Party, Roselia was at CiRCLE rehearsing. However, there was a problem during that time.

Ako's drumming is a bit slow and less energetic. This made Yukina stop singing as she glared at Ako, reprimanding her.

Yukina: Ako, your drum timing is off again!

Ako couldn't say anything as she just looked down.

Yukina: Ako! Did you hear what I just said?

Ako: Shut up!

The response from her maked Yukina triggered.

Yukina: What did you just say?

Ako: I said, shut up!

Yukina went closer towards Ako and she did something harsh.

She grabbed Ako by the collar.

Yukina: Don't you dare to talk to me like that! you little-

Lisa: H-Hey! calm down.

Ako: You should too, Lisa-nee.

Lisa: Eh?

Rinko: Ako-chan...

Ako: You girls... you left me by myself for (Y/N)-san. How could you?!

Yukina: He's our boyfriend, Ako! Don't you dare insult him!

Ako: Then...why don't you let me fall for him too!?

Yukina: You think that you're worthy to be (Y/N)'s lover?! Then go ahead and prove it to us!

She only stared at Yukina in disbelief and then she said...

Ako: Fine! I'll go find him and make sure he accepts me!

Ako ran off from her drum kit and walked out of CiRCLE to find Y/N. Rinko follows her from behind as she manages to catch up to her.

Rinko: Ako-chan! Wait!

Ako looked at her friend.

Ako: Rin-Rin...

Rinko: (Y/N)-san's at the park if you want to meet him.

Ako: Thank you. But... why are you helping me?

Rinko: We're best friends, you know? So that's why I'm helping you out.

Ako: Thank you Rin-Rin!

Ako hugged her before she continued running to the park.

Unbeknownst to the others, Rinko grinned as she messaged you about this. She's already informed that you have arrived at the train station just now.

Timeskip brought to you by Chibi (Y/N) running through the park.

Train Station: Afternoon

(Y/N)'s POV

We finally arrived at the train station and were about to head home.

I opened my phone and it was a message from Rinko. In the message said something along the lines of:

Rinko: As I expected, Ako-chan is looking for you. Meet her at the park. (◠‿・)-☆

I have no idea how, but I'm not going to bother. I closed my phone and excused myself from Poppin'Party.

(Y/N): Sorry girls, but Rinko wants me to meet her at the park.

Kasumi: Awe. Well, alrighty then.

Tae: Thank you for coming with us!

Rimi: Hope that we could spend more with you again later!

(Y/N): Yeah, whenever you girls want. Bye girls!

I began heading towards the park at a quick pace hoping that Ako won't do something life threatening to me.

As expected, she was at the park with Ako, her expression seemed unsatisfied with me.

Ako: (Y/N)-san...

(Y/N): Ako... whats wrong?

Ako: Don't act like you don't know.

She grabbed me by my collar and glared at my eyes.

Ako: Yukina-san... Sayo-san... Lisa-nee... Rin-Rin... everyone got the chance to be your girlfriend! I'm the one who didn't have that chance!

(Y/N): I-I didn't know you would get this angry about it Ako.

Ako: Oh actually I didn't mind at first when I first met you. But now my heart hurts over the fact that you're with everyone with Roselia including my best friend!

She gave me a threat right after.

Ako: I want to be your girlfriend too whether you like it or not.

She said with her eyes darkened empty staring at me.

Ako: I love you, (Y/N)-san. If you won't accept me, then...

She whispered in my ear.

Ako: I will hurt you until you fall in love with me!

She grabbed my arms, preventing me from running away. I have no choice, but to just let her do what she wants.

(Y/N): ... I-I love you too, Ako.

Once I told her my response, she jumped in excitement and her yandere self fades away.

Ako: Yay! I finally got to be (Y/N)-san's boyfriend!

She hugged me in happiness as I patted her head while hugging her. I'm glad that she didn't hurt me.

???: Fufu~ I knew this would happen.

We gazed at up at the person who said that and it was yukina along with the rest of Roselia looking who was also staring at us.

Ako: Yukina-san... Sayo-san... Lisa-nee... Rin-Rin...

Lisa: Having fun with (Y/N), Ako-Chan?~

Yukina and Sayo didn't say anything else to Ako as she apologized to them for what had happened during practice and not being honest about her own feelings.

Ako: Yukina-san, I... I want to apologize for-

Yukina: Thers no need to worry about that.

Ako: Eh?

Yukina: You're already (Y/N)'s girlfriend. But even though that is the case you are still part of Roselia. Y/N maybe important to you and us but your dedication and devotion to Roselia comes first. I will not allow you to slack of.

(Y/N): Did I... miss something?

Sayo: Minato-san and Udagawa just had a little argument before we came here to meet with you.

(Y/N): Girls... calm down, okay? Please don't fight over me. I'll give my all to make sure that none of you are left out.

Yukina: I know you aren't that type to dissapoint.

Lisa: You never ever do nor will you ever. Thats just the type of guy you are and we love you for it~

(Y/N): Ako, I don't want you to be rude towards your senpai and your bandmates okay? I'll take care of you and Roselia and I promise I'll take out on a date later. So don't be sad okay?

I gave reassurance that I'll be with her along with Roselia and she gently nodded.

Ako: Y-Yes!

(Y/N): Come on, girls. Give me a hug.

Lisa: Of course~

All of them gave me a hug as we smiled knowing that this drama had finally come to an end.

Ako: Fufufu~ From this day forth the union between you and I has been forged by the uhhh...

Rinko: Pact?

Ako:...pact! Set forth from the gods of death and despair!

Ako said her chunibyo tone at the same time, giving a big smile. I swear as chunibyo as she is, she is just the sweetest.

(Y/N): So we are Ako-chan.

As Ako was about to kiss me, I put my fingers on her lips signaling not to continue.

Ako: Eh? Why did you stop me?!

(Y/N): Let's not do it here. Not right now atleast. People might think that I'm a creep or something.

Ako: Hmph, fine!

She said making a pouty face. So as an alternatice she just hugs me tightly while still pouting due to the fact she was unsatisfied that I didn't kiss her now.

Ako: I want to play NFO together with me and Rin-Rin later!

(Y/N): I'll think about it.

Ako: Ehhhh?! Neglecting me already? Is that how you treat your new girlfriend?!

(Y/N): N-No It's not that! I just need to spend more time with you along with others as well you know? But don't worry. I'll make an account and play with you and Rinko.

Ako: Yay! I love you, (Y/N)-san.

(Y/N): I love you too, Ako. And you too, Yukina, Sayo, Lisa, Rinko.

We all hugged each other for a bit before Roselia went back to CiRCLE and continued their band rehearsal. With that being said, I now have 19 girlfriends now and all of them are band girls. Sheesh what a crazy life I live but I can live with it.

(To be continued...)

(Author's Note: Oh boy, I'd better finish this book before starting Hepta-Vocalists x Male Reader. Hopefully I can make it.

And with that, gentlemen, you have yourself all band members of Poppin'Party, Pastel*Palettes and Roselia to be your yandere girlfriends. Who will be next?

Clue: Fleeting.

Have a good day and see you in the next one!)