Rui, an alchemist with a curious mind, stood in his workshop, surrounded by vials of liquids in every color of the rainbow, and ingredients ranging from herbs to animal parts. The smell of potions and chemicals filled the air. Suddenly, a loud and familiar voice broke his concentration.

"Tadaima!" The voice shouted, and the door to the shop burst open to reveal Tsukasa Tenma, a famed star in Wunterlex city. The energetic man responsible for the lively voice, stepped into the shop, looking around, curiosity in eyes.

"Quite an impressive display you have here." He commented, glancing at the various potions and ingredients on the shelves. Rui chuckled and fixed his clothes, moving from behind the counter.

"Ah, welcome, Tsukasa. You're here seeking the premium potions, I presume?" Tsukasa rubbed his chin thoughtfully. "Indeed I am! I have a big performance coming up. I could really use something to keep my energy going..."

Rui nodded, walking over to a shelf filled with various potions. He picked up a bottle of shimmering blue liquid. He shook it up a bit. "It should give you a burst of energy like you've never experienced before."

Tsukasa's eyes widened in anticipation. "That sounds perfect! How much do I owe you?" Rui waved a hand dismissively, chuckling. "No need to worry about payment. I'll make an exception for a hardworking star like you."

Tsukasa's face lit up with gratitude, smiling wider. "You're too kind, but thanks!" He said, taking the potion carefully and packing it to his pocket, safely.

Tsukasa and Rui exited the shop, the latter locking the door behind them.

"So," Tsukasa began, a smile playing at the corner of his lips "I've been hearing rumors about a lovely little spot near the river. Thought we could take a stroll and enjoy the day."

Rui returned the smile, calm expression on his face. "I'd be happy to join you. A change of scenery sounds wonderful... silence... perhaps one day, we will explore the world outside, eh?"