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Koryu Sakaki.
At some point, he was the youngest ever recipient of the Kikukawa Jiro Theater Award, and became famous worldwide for his highly artistic productions, with many films and TV shows under his credits. He is well-known overseas.
Koryu is assertive, and shows a lack of care for what is thought of him by his friend. He appears gentle-natured and amiable as he only seems to follow his interests and doesn't mind what else is going on around him. However, he was extensive knowledge about film directing, knowing where to pinpoint the flaws in Tomomi and Rui's works can be critical of them. He is rather laid-back and not obsessive over formalies.
...
Following a meeting, Wonderlands x Showtime decided that they were going to stage their own performance. Fortunately, with Sakaki's assistance, the group managed to succesfully secure a stage and the show's opening night went off without a hitch. However, once the curtains fell, Sakaki had one thing to say: "It seems like this show can still be improved. Would you ming letting me help out?"
After that, even if Tenma Tsukasa agreed on this himself, it wasn't exactly the best, for some people, atleast.
Because Tsukasa had to imagine the "action" of taking the life of his family, he had to distance his sister and told her to not talk to him, and since he got too into the role, muttering some creepy things and all, Len told the rest of Wonderlands x Showtime out of concern, and luckily, they talked about it and helped him.
During all of these events, all Hanamori Itsuki could do was watch.
Even if everything was okay now, he still felt a geniune hatred for Sakaki and what he did to his dear friend, Tsukasa.
He was nervous.
So... after all this stuff...
He had a plan.
"◯◯◯-chan?" Itsuki mumbled, looking to the Shinigami right next to his side who watched him lay down on his bed. "I haven't used this notebook ever... can I use it now?"
The Shinigami stayed quiet for a few seconds before replying in a low, monotone voice:
— You don't have to ask me, Hanamori. That notebook is now yours and you can use it however you want.
Itsuki smiled. He sat up and streched his back while yawning, then walked towards his bookshelf. He reached out for a box filled with his old things. His first tooth, medals he won, pictures with his friends... He took out all of the things until the notebook was visible. The Death Note.
He placed the notebook on his desk. He walked towards the door and closed it even though no one was home. A manic smile appeared on his face as he chuckled, reaching out for a pen to write a name for the first time since he had the notebook. He leaned down and started writing...

Itsuki grinned then turned to ◯◯◯. He felt... relieved? Sakaki deserved to die, didn't he? Well, atleast to him. Then, he looked at the clock:
— I wrote his name 10 seconds ago. 28, 27, 26, 25, 24, 23, 22, 21, 20...
A FEW DAYS LATER
Itsuki went to school and decided to check up on his friend, Tsukasa. Then he realized how shocked he looked. He walked towards him and spoke:
— Senpai, are you okay?
Tsukasa looked up at him, then muttered:
— Sakaki...
— Hm?
— ...Sakaki died.
The end~

