The Scramble Crossing Murder

Lolzers this contains LOADS of spoilers and this is basically the whole story so read at your own risk!
The Scramble Crossing Murder is an event that happens at… well, Scramble Crossing. The bodies of three people, Shinonome Akito, Hoshino Ichika, and Kiritani Haruka are found in a bag dragged by Kusanagi Nene. Emu meets Nene and is shocked to see the sight, what could’ve possible happened?
==The Discovery==
Nene was dropping off bodies to a corner in a bag on Scramble Crossing. Emu then walks towards the area, as Nene was unprepared, she quickly moved a bit from the bodies and thought up of a quick response. “Hi Emu-chan 😊😊☺️☺️😇” Emu then scaredly asks if Nene had killed the people, “W-W-WHAT IS THIS?!??😨😨😨😨😨😨😨😱😱😱 NNNN-NE-NENE YOU.. DID THAT!??😨😨”. Nene denies and claims that she found them and Rui had done the crime and pointed at a stray purple hair on the bag. Emu suggests calling the police, but Nene couldn’t bear to betray her childhood friend. Emu corrects herself by saying “NNN-NO I MM-MEAN JUST GET ALL TH-THE EVIDENCE BEFORE CALLING THE PP-POLICE.” But Nene blames the crime on herself, Emu exclaims and tells Nene that she shouldn’t do that.
Nene was seen disposing a trash bag at Scramble Crossing handed by her from Rui, not knowing what was inside. While dragging the trash bag to where no one could see it, then Nene accidentally created a rip in the bag during the process. Emu is spotted walking, getting closer to Nene. Nene was unprepared for the sudden visitor and decided to step a few meters away from the bag as if she had nothing to do with it. Then she quickly thought up a reply, Emu was already at Nene and her eyes met the bag behind her. “Hi Emu-chan.” 
Tsukasa spots Emu and Nene and meets up with the two. Did no one close the bag well enough? Because just then, all the bodies fell out of the bag. (I just added this to make more sense on how tsukasa’s next action) Tsukasa then spots the bodies and asks “W-Who did this?!” Emu quickly says that Nene had found these bodies, but Nene claims again that she had killed these people. Tsukasa questions on how such a popular idol is dead, while clearly baffled. “Is that Haruka Kiritani?? Why is she in this pile!!” The bodies that had fallen out have fallen out into a sloppy pile. Emu tells Nene “WWW-WHAT NOO!!! NENE YOU DIDN'T THIS RIGHT? NENE?!” Tsukasa also questions this. “Did.. you?” Kohane could be heard rapping in the background, best not to get her involved right now. “Not actually.. it..it was Rui..” Emu was in shock, “But we all love Rui-kun don’t we? We can’t get him in jail like this..” Though it’s a crime, surprisingly no one was against the idea. 
“Speaking of which, where is Rui?” Nene asks the other two. Both have no idea where he is. Emu suddenly exclaims, “EEEGH!!? IS THAT RUI?!?😨” Nene, a bit surprised from the noise shouts, “WHERE?”  “BBB-BEHIND YOU!“ Nene didn’t process Emu’s words and thought about Rui. Did Rui… murder.. people? Nene looked at the bodies. There’s Haruka-san, Ichika-chan, and.. Shinonome-kun? She was then disrupted by Rui, “Hey Nene! What’s up?” It sounded like he didn’t know what was going on. Nene screamed, “Rui-kun, hi!! …” “RRR-RUI?!” "Acting innocent now are we.." Nene said suspiciously. “Hey Rui, did you make something that leaves a smell recently?” "I'm pretty sure that's the smell of those bodies rotting" Rui had noticed the bodies. Kohane appeared, "Uhm.. it smells like dead bodies here.. did someone.. die!?" (an adaptation of the text) Kohane said, smelling the air, plus everyone was surrounding the bodies in a circle, so it was pretty noticeable that something was going on here. 
“Hey girl! There isn’t anything interesting around here!” "Kohane-san, it's best if you go!! There's a big icky spider here!! Even I am scared..WAAA-" Emu screamed. "EEK! Ok Emu-chan…" Kohane left, she had a suspicious feeling but shrugged it off after all, Emu was her friend. "UHUHUHHH-UH RUI-KUN DO YOU KNOW ANYTHING AA-ABOUT THESE DEAD BODIES?!" Emu tried to whisper but failed.  
Rui looked at the bodies. "No clue." Emu talked to herself in her head. EEK! I know Rui is H-Hiding something, his smiles are fake!!! (Since this isn't doppelganger Rui, he's not actually hiding anything) "Suspicious.." Honami appears with Minori, dressed as police officers. Actually being part of the police is a side-gig. "NENE WHERE DID YOU GO?!" Emu said. Nene was right beside her. "I'm right here." "Oh!" "Nene.. do you think Rui-kun actually did this??" "I-well.. I suppose so."