"I found a notepad during my search, and I shaded in the top sheet with a pencil." Kirigiri continued. "And these are the words that appeared."

"Oh man, I've totally seen people do that on detective shows!" Said an excited Asahina. "When you write, it can leave an imprint. Sketch over the next sheet of paper, and you can see the words! When I saw that, I was like: "Holy crap! I better make sure I rip the paper out before I use it from now on"."

"It's a pretty old-fashioned technique, but even the classics can be surprisingly useful sometimes." Said Kirigiri. "Oh, and I should also mention… I found the notepad on the desk in Naegi's room."

"Huh?" I gasped. That would mean…!

"Which means only someone who has been in Naegi's room before the incident could have written it." She continued.

"Then either it was Naegi, who lived there, or Maizono, who switched rooms for a single night…" Assumed Togami.

Kirigiri took a glance at me and asked: "So, Naegi… Did you write this?"

"N-No, I didn't. But-" I began. Kirigiri cut me off and pointed to Maizono's name on the notepad.

"Of course you didn't." She began. "Because the note also bears a perfectly legible signature: Maizono's signature."

Then… That note…

Maizono wrote it…?

"B-But why?" I asked. "Why would she write that?"

"The note was likely her way of getting in touch with a certain someone." Kirigiri explained. "She must have slid it under their door to let them know she wanted to meet with them in secret."

"If you got an invitation like that from the Ultimate Pop Sensation, what young man could resist?" Asked Yamada before realizing what he said. "Of course, I'm only into 2D so it wouldn't have any effect on me!"

Just then, Celeste spoke up and asked something I never even thought of:

"…But can we be sure anyone even got this note? And honestly, even if they did, I do not think they are at all involved in what happened."

"Huh? What makes you say that?" Asked Chihiro.

"Hmhm…" She chuckled ominously. "Would you like to hear what I have to say? Very well, then. Pay attention!"

She then began explaining. "Maizono and Naegi switched rooms, correct? But in the note, the place they were asked to come to specifically says "My" room."

"I see…" Understood Chihiro. "So if someone read that note, then they would have gone to Maizono's room!"

"Exactly." Said Celeste happily. "The room that Naegi was staying in."

I cut her off there. "Wait, Celeste." I began. "If I remember correctly, the nameplates on my and Maizono's rooms got switched."

"They got… Switched?" She repeated in disbelief.

"That's right." Said Kirigiri. "The nameplates got switched, just like the rooms themselves. As a result, the nameplate on Maizono's room actually had Naegi's name, and the nameplate on Naegi's and Maizono's."

"So what you're saying is, the room Maizono was staying in, was actually marked as her room." Assumed Togami.

"Then…" Began Chihiro. "If someone did do what the note said, they would end up at Naegi's room, where Maizono was…"

"Plus, their rooms are right next to each other." Added Kirigiri. "So switching the nameplates would be no problem. And the one who switched the names was… Well of course it wasn't you, right Naegi?"

"R-Right…" I nodded. Leon spoke next.

"Okay… Then who did it?" He asked.

There's only one person who could've switched the nameplates. The only other person who knew we had switched rooms…

"Me and Maizono were the only ones who ever knew about us switching rooms." I began. "So the only other person besides me who would even know to switch the nameplates… Was Maizono."

"You can also infer as much from her note…" Said Kirigiri. "She specifically tells the reader to check the nameplate. She would only have written that if she knew the nameplates had been switched."

"But… Why would she switch them in the first place?" Asked Chihiro.

"She wanted someone to come to the room she was in, and also hide the fact that it was Naegi's room." She said.

"What…?" I gasped. Why on Earth would she do that?

"Inviting someone to "Your" room, but not telling them you'd switched rooms…" Repeated Asahina. "Why would anyone do that?"

"To understand that…" Began Kirigiri. "We first need to understand what happened after she invited the person into the room. That's where the answer lies…"

"What happened then was… Probably…" Began Ishimaru nervously. "Whoever she invited over… Came in, and attacked her! We figured it out! We know who did it! Whoever she invited over is the culprit!"

"But we still don't know who it is, ya goddamn idiot…" Said Mondo under his breath.

"Maizono fought with her killer in the room, yes?" Asked Celeste. "Perhaps the answer to our previous question lies in that initial struggle."

"Yes, I think you're right." Agreed Kirigiri.

"Then… We just have to figure out what happened during the fight, right?" Asked Asahina.

"That reminds me…" Sakura said suddenly. "There was a replica sword at the murder scene. Was that perhaps used during the fight?"

"Oh yeah, what's the deal with that sword?" Asked Mondo.

"Maizono suggested I should hold on to it." I explained. "I thought it might come in handy if I had to defend myself… It seems pretty likely that the killer used it to break Maizono's right wrist."

"How the hell could you possibly know that's what broke her wrist!?" Asked Leon.

"All you have to do is take a good look at her broken wrist, and it should become pretty clear." I explained as I pulled out my e-Handbook. Showing everyone the picture of Maizono's right wrist. Right there where her wrist is all swollen, there's something glittery there, see?"

"Is…" Gasped Chihiro. "Is that gold?"

"It sure is." I nodded. "Specifically, the gold coating from the replica sword. You barely have to touch that stuff and it'll stick right to you. And there's some on her wrist because-"

"I got it!" Interrupted Ishimaru. "Because she got hit with the sword, right there on her wrist!"

"I see, I see…" Smirked Yamada. "And so the truth draws ever closer…"

"Alright!" Exclaimed Hagakure. "Then it's about time to solve this mystery!"