Arandor
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Zybr, who had inexplicably entered the planetarium room, was stealthily approached by one of his opponents under the cover of darkness. The knife strike to the back was a complete surprise. He was treacherous, vile, merciless, and ruthless, and he immediately killed the poor fellow...
Sunny! was so engrossed in communicating with the computer in one of the high-tech rooms that he didn't even notice when he was beheaded. The neat and even cut, and the hand saw stuck in the keyboard in front of the corpse, testified to the killer's high level of professionalism, even though everyone had the same training. Sunny! never got to finish something consisting of two columns of numbers...
The last victim was Hermit. While he was relaxing in a massage chair, a red and blue flashing police car light fell on him. How the killer was able to carry out such a plan and how he found such a sophisticated murder weapon is a big mystery...
the clues are somewhere around here.
Added after 32 seconds
I don't know about Azi. There's too much written there. Maybe the future itself is a clue
Be strong. Believe