F&H Chapter 5- The first death

"Now, Yu-chan," Fai said turning back to an impatient Yusuke. "I hope you'll excuse that slight interruption and pull forth your wand."
Yusuke drew his wand and stood in position as Fai instructed him. "The magic word is "makai". Tilt your wand up like this, and shout the magic word on one.... two..."
"Makai!" Yusuke yelled. A silver light twisted and whisped from his wand and attached itself to the wall. The light was soon gone, replaced by a tall transparent door.
"What kind of defense is that?" Yusuke asked. Though he hadn't been sure what to expect, a door coming out of no where would not have been his first guess.
"I call it my super magical exit! This door will help you escape from your enemy!"
The class laughed. Yusuke slowly opened the door with caution. Inside was a vortex of color. Fai congratulated Yusuke on his achievement. "I award 100 points to Griffindor!" The Hufflepuffs' faces went sleet white. "....And.... 99 points to Hufflepuff for being so patient!"
"Where exactly will this lead?" Yusuke wondered aloud.
"Whereever you want in this world-for 3 minutes! When the time limit is up, you will return here. If you cast the spell again before the time limit is up, you will arrive to the next destination for three minutes and so on and so forth- always returning here. Do you want to try it?"
Yusuke nodded, and with a wave to his friends for support, jumped into the portal. Fai took out a pocket watch. "Three minutes starts-now!"
The class watched in awe, wondering where Yusuke had chosen to go. Syaoran wanted to jump out of his seat, shout "Makai!" and appear at Sakura's side. He couldn't help but worry about where she might be. Apparently, Kyo was thinking the same thing; with everyone distracted, it was easy to escape. Kyo tip-toed from the room, and Syaoran followed.
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Sakura gasped. Severus Snape lay sprawled, motionless on the ground- his eyes in a wide stare with no destination. His life's blood had spilled from his arm, leaving a crimson pool beneath him and his face was frozen in a look of horror. The tears that had dried on her soft cheeks began to flow once more as she pressed her ear to his chest. Nothing. Not one heart beat. Severus Snape was dead.
But why? And who had written the message to keep everyone out? Who had murdered him?!
Behind her, the door was opened wider and someone pulled her away from the sight. Then, the image of death still on her mind, Sakura fell into darkness.