I'm suffering but it's fine (Kokichi x Shuichi)

Chapter 10

Shuichi's POV

We found out Korekiyo was the killer and he was executed.
We left the trial grounds and returned to our dorms. I thought about Kokichi. Tenko's death must of hit him hard. He was really quiet the whole trial.
I felt a a wave of tiredness wash over me and I fell asleep.

The next morning when I went to the dining hall, everyone was quite. Angie and Tenko always lightened up the dining hall. Korekiyo was really creepy I must admit, but his story...
No one deserves that.
When will this end.
I then noticed Kokichi wasn't in the dining hall.
I quickly rushed over to his dorm and knocked on the door. After a few seconds the door opened.
Kokichi stood there. His hair was messier than usual nad he had noticeable eye bags. Basically he looked dreadful. "Shuichi?" He said rubbing his eyes. "Kokichi?! Where were you?! I was worried..." he gave me a confused look. "What time is it?" I stared at him "it's 9 am Kokichi..."
Kokichi started at me in shock. "It's what?!?"
"Kokichi? How long have you been up for..."
he stayed silent.
"Answer me Kokichi."
He muttered something but I couldn't hear him.
"What did you say."
" I was up for 12 hours."
He was up for 12 hours?! What the hell was he doing?! "Kokichi why?!"
"I know who the mastermind is..."
I looked at him in disbelief. He sighed and went back to his room. "Kokichi wait!"
He didn't respond and slammed the door shut. He knows who the mastermind is? Is that why he was up for so long? He sighed. "You won't believe me when I tell you." I looked at him confused. He sighed again. "I'm going back in."
He said while walking back into his room. "Wait!" I said stopping him. "Who's the mastermind?" I said hoping to get an answer.

"Tsumugi..."

What.