I took a look at the Monokuma File 2. What it said were:

Victim: Artigat Cawles

Cause Of Death: Stab Wound To Stomach

Other Injuries: Cuts On Head

Location: Gym Stage

Time Of Death: 10:30 AM

OBTAINED TRUTH BULLET: Monokuma File 2

I looked around the body, and noticed the vase was missing from the table. When I looked around, I noticed the broken remains near Artigat. Could this be the cause of the head cuts?

OBTAINED TRUTH BULLET: Broken Vase Pieces

Hm...the knife must've come from the kitchen...I better go there, but I feel like the paint lines from the front door to the gym are important, the killer could've used them to navigate in the dark.

OBTAINED TRUTH BULLET: Paint Lines

I think Meizu took pictures of us near the door to the gym, and someone turned off the lights there. I walked over to her.

"Oh, hey Ryotaru", she said.

"Hey...do you have the picture you took before the lights went out?" I asked.

She nodded and handed me the picture. I gasped. There was a hand coming out of the half open door...and I recognized the sleeve of the hand. It was Kohiro...

OBTAINED TRUTH BULLET: Meizu's Picture

I looked around, and saw Yuyaka looking at the paint.

"Hey, Ryotaru...I heard footsteps from the gym door to the stage, and it seemed to be walking along the paint", he said to me.

"How did you hear the footsteps?" I asked.

"I'm a con artist, I've run away before, so I've needed to know where footsteps go so I know the coast is clear", he explained.

So he heard footsteps walking along the paint, from the gym door to the stage...

OBTAINED TRUTH BULLET: Footsteps Yuyaka Heard

I decided to go to the kitchen since the knife must've come from there, and I saw Daisy there. I also noticed a kitchen knife was missing.

"So you noticed it too..." she murmured.

"Yeah...do you know when and who took this?" I asked.

"Well, I was here, drinking some tea. While I did so, Kohiro came here, and I saw him drink some water. I looked away for a bit, and he left. I looked around the kitchen, and I noticed a knife gone", she said.

"Was the knife here before Kohiro came?" 

"Yes".

The knife was here before Kohiro came...and when he came and left, the knife was gone.

OBTAINED TRUTH BULLET: Daisy's Account

I thought back at the murder, and I remember there was a thud, vase breaking, and another thud. If what I'm think is correct, why are there two thuds, and why before the vase breaking? There should only be one and only after the vase breaks...

OBTAINED TRUTH BULLET: Noises During Lights Off

*DING DONG BING BONG*

"It's time for the class trial! Head to the big red door!" Monokuma said in the monitors before the monitors turned off. We went to the door. Everyone was muttering about how Artigat got killed in the dark. After everyone else came, we went in the elevator. There was another crossed out picture at a podium, and it was Tarta's picture since he was dead.

Is Monokuma gonna fill up this room with crossed out portraits? Who knows...

I need to find the true killer. I have a suspect, but it's possible something's happened during the murder...and now I have another suspect...

Something's going on, and I'll reveal the truth!

CLASS TRIAL 

BEGIN!!!