I do not own DN or its characters

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Mello printed out a few sheets, he was still researching one case, and felt he had fallen behind. But he didn't worry about Matt, he knew he would come back.
Matt had returned after being a week, and ½. Mello had bitched him out, only to have Matt lock himself in his room. The next 3 days were hard. Both boys were tense around each other. Matt hadn't been with it, and was slacking off, which annoyed Mello. As far as he was concerned Matt being gone for a week and ½ was more than enough rest. Especially since Mello didn't get chocolate... and he told Matt not to slack off after what happened.
Mello watched Matt as the goggled boy typed slowly, pausing every two or three minutes, before continuing again. He'd only managed to type one page, over the course of 3 hours and Mello did NOT feel like waiting 69 hours for his 23 page long report to be finished, and he was still writing more. (Mello wrote on paper, Matt typed it up.) Mello growled, putting down his chocolate, and pencil, then walked over to Matt.
"what the HELL are you doing?" Mello asked, trying not to get angry.
Matt looked up at Mello, opening his mouth as if to say something, but only stared.
"Well?!" Mello asked, obviously not doing a very good job keeping calm.
"I...was typing..."
"1 page in three FUCKING hours?!"
"...actually, 1.3 it says."
"AUGH! That's it!!" Mello screamed, and stomped off to the kitchen. "fucking useless!"
Matt gave a hurt look, before mumbling."am not."
Mello wasn't meant to hear, but he did, and took it as a challenge.
"are too."
"are not"
"ARE...TOO..."
"...no" Matt leaned his face on his hand.
"YES"
"no"
"YES!"
"no"
"yes god damn it!" Mello grabbed the first thing he could reach, ad whipped it at Matt, not caring what it was. Until, he saw it was a knife. His eyes widened. 'FUCK!'
Matt heard shuffling, and looked up just in time, so the knife instead of hitting his forehead, cut his cheek, and the hand it had been resting on.
Matt winced, clutching his hand, which looked to have taken most of the damage.
"oh shit..." Mello walked over, "Matt... Matty I-"
"go the fuck away!" Matt screamed, carefully standing up, "what the fuck did I ever do to you?!"
and with that Matt went to his room, grabbing the first aid box on his way through.