author p.o.v
So after you and rin finish with the recording you all went to the break room to talk some more even miku show her fake smile and follow both of you she still have ideas how to take rin out without you notice it so all of you were hanging out at the break room and then kaito ask about your songs

Kaito: hey y/n kun ?

Y/n: yeah kaito

Kaito: so do you have any songs that require and of us to help ?

Y/n: well i do have a lot of songs that i require your help also

Kaito: okay then

Then when miku heard those words she had a devilish smile and said in her thoughts

Miku: i hope i can get to record with y/n kun more than any of them ha ha ha

Until everyone look at her except you ,kaito and rin had a normal face

Len: ahh miku are you okay

miku: ahh yeah len

Y/n: yeah for her everything is okay (sarcastic voice)

Miku: what do you mean y/n kun huh ?

Y/n: nothing anyways look at the time i have to go somewhere

Rin: really do you have to go ?

Y/n: yeah sorry rin

Kaito: well okay bro see you later i guess

Y/n: okay well see yeah and thank you again for helping out today

So you wave at everyone and left the studio while the others were continue what they doing then miku had a call from yoshi

Yoshi: hey miku chan

Miku: hey yoshi san

Yoshi: hey can i meet you later

Miku: sure yoshi san

yoshi: okay bye miku chan

Miku: bye yoshi san

Miku hang up on her phone and walked to the others but what she don't know is two people was listening and it was rin and kaito

Rin: well looks like miss two pig tailed hair got a date

Kaito: should we follow and tell y/n kun

Rin: okay . You call him and tell to meet us at the house okay

Kaito: alright

So rin and kaito went to the others for joining meanwhile you went back home to think about how to confront at your ex who has been cheating with you then suddenly you phone rang and you see who it was kaito

Y/n: yeah kaito what sup

Kaito: hey y/n kun we got news that miku is going to see yoshi later me and rin are going to spy on her if you wanna follow

You were thinking for a second and answer quickly

Y/n: sure why not lets go spy on my ex girlfriend

Kaito: okay i'll tell rin that your coming

Y/n: okay

So you end the call and you lay down on the bed to think about what your going to say at miku and said you found out about her and yoshi . So you grab the present and grab your coat and went to kaito and rin

Timeline skip few minutes later

Miku was done with her recording for the day and she pack her things and went out of there while rin and kaito went to stealth mode to follow miku but they were waiting for you while following her they hid behind a wall and heard voices

Miku: hey yoshi

yoshi: hey miku so shall we get going?

Miku: sure where are we going

Yoshi: to the park

Miku: okay

So both of them going to the park while rin and kaito still follows them and then kaito receive a meassge from you

Y/n: hey guys i am coming where to meet

Kaito: dude get to the park and fast!!

Y/n: okay i will be there

So you ran as fast you can to the park while rin and kaito see that miku and yoshi was making out

Rin: i am really going to punch that bitch

Kaito: hang on rin hang on okay we just need to wait for y/n kun then we can confront her

Rin : okay

Then suddenly rin felt something tap her shoulder and she see it was you

Rin: ahh y/n kun

Y/n: hey rin kaito

Kaito: hey good your here look over there

Kaito pointed at miku and yoshi making out that make you depressed and show like your going to cry then rin hug you

Rin: there there y/n kun let all out

Y/n: thanks rin

Rin: if your ready to make a move we can follow if not we can head back home

Y/n: no we move now

Kaito: alright lets do this thing

So the three of you stand up from the bushes and suprisingly caught miku in the act she was shocked and suprised that rin and kaito was here even though she don't care she will kill them but you were there she was on the verge of nervousness to say to you . The three walked towards both of them and then you said

Y/n: miku how could you do this to me

Miku: y/n kun please let me explain just give me a chance

Y/n: no more of your lies or excuse i don't want to heat it

She grab your hand to say she is sorry but you push her hand away then yoshi stand up he walked towards you

Yoshi: hey y/n kun what the hell you can't push a girl like that

Y/n: oh yeah how would you know huh yoshi you took my girlfriend away from me

Yoshi: so its not like i did something wrong

Y/n: yes you did

Then you start to push yoshi but someone did not like it

Miku: stop hurting my yoshi

Y/n: or what i am going to keep doing like this till his far away from me

Yoshi: oh yeah

He pushed you back but you pushed a little stronger to make him fell until someone pulls out a knife and went towards you

Rin: y/n kun look out!!!!!!

You did'nt hear what rin said instead you felt a pain in your chest seeing that miku has stab you with her knife

Miku: Like i said no one touches my yoshi senpai

Blood was coming out of your shirt and you fell down the others came to you

Rin: y/n kun don't die on me please don't die on me

Kaito: miku how dare you kill y/n kun he was our best friend and your boyfriend

Miku: yeah so he cheated on me first maybe that's why he deserve it a death punishment

Kaito: oh yeah what if i said he found you were the one who first cheated on him

Miku: w.w.what do you mean

Kaito: me and y/n kun were going to the house that day to put something in your room but when we got there you were making out with him so he was sad depressed of what you done and this is has cross the line miku

Miku realize something then her eyes started to cry she drop her knife and kneel down next to you
Miku: y/n kun wake up please you promis not to leave me you promise

You eyes was still close then the ambulance arrive and pick you up on the gurney and went to the hospital .

Timeline skip a few hours later

The surgery was very long everyone from the vocaloids were there so as miku,rin,kaito and yoshi was there miku was nervously waiting left and right while rin was still comfort by len then the surgery was over and the doctor was out of there until a voice called it was kaito voice

Kaito: doctor how is he

Doctor: well the stab wound was hit in real deep into the chest

Len: doctor is he okay or not

Doctor: ahhhh mr l/n is

Author note
Hey wadduo guys its me i hope you enjoy this chapter and support me till the end and also this is the cliffhanger did'nt excpect that do you well in the next chapter who knows the reader might be survive from the attack or maybe not who knows but wait for the next chapter so i think that's it for today i am thenick5o and i will see you guys later peace out