#i mean i've seen a fic where tsukasa becomes the yuu so why not rui

[tsukikoayanosuke]

Piece of My World - Ruikasa Week 2023

Day 3: Song (Piece of My World by Night Ravens)

(No knowledge of Twisted Wonderland is needed for this fic)

Rui could hear someone humming. The only problem was he was the only one in his workshop. None of his robots was on at the moment so who could be humming? It was a nice tune, don't get him wrong, and he actually would enjoy it if it wasn't for the fact he didn't know where it came from.

At first, he thought it was his own imagination, but days later, it had become a common occurrence. So, Rui searched through his room, and checked his robots, until finally, when the humming sounded once again, he found the source.

It was his mirror. A full-body mirror that he had found when he first changed the garage into his workshop. He actually forgot about the mirror since he never really used it. It was really an ordinary mirror, really, not something antique or passed down through generations.

Rui tapped the glass. Perhaps there was a secret compartment for a tape. But nothing came out. And the humming stopped. Once again, Rui thought that it was his sleep-deprived brain pulling some trick on him. But just as he was about to walk away, a knocking could be heard, followed by a whisper:

"...Hey... -me...?"

Huh. Curiouser and curiouser.

Rui knocked on the mirror again. "Is someone there?"

There was a brief pause, before the knocking return. "Who are you?"

"Kamishiro Rui." Rui knows it might not be a good idea to give his name to a stranger, let alone a mysterious voice coming from a mirror. But his heart is pounding from the discovery. "And you are?"

"I'm Tsukasa. Tsukasa Tenma." The voice replied. "Hold on...Let me just..."

The mirror suddenly shone bright, forcing Rui to step back and cover his eyes. When the light dimmed down, Rui can see someone who wasn't his own reflection standing inside the mirror. It was a boy with blond hair and sunset eyes, dressed in a black and purple robe with the hood on, while holding a pen with a magic crystal and standing in a middle of a room filled with floating coffins.

"Ah! I can see you now!" Tsukasa cheered.

This is real. A boy just appeared in his mirror. "Is this...magic?"

"Yeah. I can do magic." Tsukasa puffed out his chest. "This is nothing for a great magician like me."

"You're a magician...You can do magic..."

"Can't you?"

Rui shook his head. This can't be a dream, can it? "How did you do it?"

"It took a while. I thought I see your silhouette a couple of times in the Mirror of Darkness, but I wasn't so sure until I heard you knocking."

"The Mirror of Darkness?"

"Looks like your mirror is connected to our school's mirror. We used this often as teleportation, so I thought you were just someone coming back to school."

"School? Like Hogwarts?"

Tsukasa's nose scrunched. "What kind of name is that?"

"It's not important." Rui felt the excitement bubbling inside of him. What a great discovery! Rui had never thought that magic could exist, but here he was; talking to a boy from another dimension who apparently is attending a school for magicians. "A world filled with magic...Wow..."

"I'm guessing your place doesn't have magic?" Tsukasa asked.

Rui shook his head. "This is amazing...What else can you do other than communication and teleportation? Do you have a potion class? Do you fly with a broomstick?"

Tsukasa blinked in surprise. But then he grinned. "Well, first of all, magic can do a lot of cool things!"

Rui didn't know how long he talked to the boy. It was fascinating to hear Tsukasa explaining about magic and his world. He even showed a couple of spells that never cease Rui's amazement. The more he listened, the more he wanted to go there. He wanted to try magic, he wanted to explore more of the world, and he wanted to meet Tsukasa in real life.

"You think I can go there?" Rui asked.

Tsukasa hummed as he thought about it. "I've never heard about someone coming here from another dimension. But if we can talk, then maybe yes?"

"I want to go there," Rui said. "I want to meet Tsukasa for real and learn magic with him."

That caused Tsukasa to blush. "Maybe one day we can find a way." Rui had to hold back a pout because he wanted to go now.

Perhaps the magic of Tsukasa's world heard his inner wish. That night, just when Rui was about to fall asleep on his table again, the mirror glowed.

Ah...My beloved lord. My glorious, beautiful flower of evil.

"Tsukasa...?" he mumbled sleepily. But the voice that came out from the mirror was not Tsukasa, but it was alluring.

You are the fairest in all the land. Mirror, Mirror, pray tell. Who is the most---?

Rui didn't even realize that he had stood up from the desk and walked toward the mirror. It was as if he was hypnotized by the voice.

--You, who has been summed by the Mirror of Darkness. Listen to your heart's desire and take the hand of the one reflected in the mirror.

He wanted to meet Tsukasa... He wanted to learn magic with Tsukasa...

A hand appeared in the mirror; a hand that looks like Tsukasa's hand. Rui didn't even think twice. He took the hand-

-and the world shattered.

——————————————————————————————

When he opened his eyes, Tsukasa's face is above him. "Rui?"

Rui blinked a couple of times. "Tsukasa...?"

"Is he awake, Mister Tenma?" An unfamiliar voice could be heard and Tsukasa turned away from Rui toward the masked man that reminded Rui of a raven.

"Yes, headmaster." Tsukasa looked at Rui, giving him a smile before looking back at the man. "But, why him?"

The headmaster didn't immediately answer but focused on Rui. "You're Rui Kamishiro, correct? That's what Mister Tenma here called you."

Rui nodded, still feeling tired. The man smiled. "I'm sure you have many questions, but let me say this to you first."

"Welcome to Night Raven College. Welcome to Twisted Wonderland."

Rui Kamishiro. An ordinary boy, whose wish is to be with the boy from the other side of the mirror, opened the door to a magical world of heroes and villains.

Well, there's nothing bad in indulging in the wonderland, is there?

Listen to the song here.

And for the German cover of the song as a bonus. This group also covered a lot of Project Sekai songs, so check them out.

Some silly headcanon if you want to know where I would put the Proseka kids in the Twisted-Wonderland’s dorms. And more if I put the Twisted-Wonderland cast into the Proseka bands.