Shirayuki's perspective:
Back in her work station with Ryuu, Shirayuki was thinking of the potion to open up a portal.
"Ryuu? Is there a plant that somehow opens up a portal when they need to have a certain circumstance?"
"Hm… There's no such plant that can open up a portal. But I did read Gynura aurantiaca, a purple passion vine that came from Southern Asia. I think we have imported some here. But you have to check with the Head Pharmacist. She knows more about the importation."
"Okay thanks." Shirayuki ran to Garrack Gezelt's office.
"Head Pharmacist? Are you here?" Shirayuki said as she knocked on her door. A few moments later, Garrack Gezelt appeared yawning.
"Yes. Shirayuki? What's wrong?"
"Head Pharmacist, I have a question for you. Do we have Gynura aurantiaca?" Garrack Gezelt yawned again.
"You mean that stinky Purple passion vine? I think we have it in a sub green house room in the green house. Why do you ask?"
"It's because I need to make a portal for Princess Yona and her group. Is it true that that Purple passion vine can make a portal?" Garrack Gezelt was suddenly alert.
"A portal plant? That's not bad. I've heard legends saying that Gynura aurantiaca can make it. But it has to be made well in order to create a portal. If you can actually make a portal work, that would be a breakout news for the whole country. Work hard Shirayuki!" And with that, Shirayuki was in the library all afternoon and evening. She even skipped supper, because she was so intrigued by the overflowing information on Gynura aurantiaca. A lot of information were theoretically speaking. But nothing actually been tested it. Shirayuki went to her lab station, and started drawing samples of the Purple Passion Vine and diluted, mixed it with different substances and finally, at an instant, got the right color to drink for a portal to be created. But that color disappeared right after it was seen.
"Shirayuki?" Zen called as he walked into the library.
"you haven't eaten yet. Come eat!"
"Oh! Zen. I didn't see you. I'm trying to work out this portal plant. I got the color but it was just an instant. I need to know how to stabilize the color—Woah! What's that smell? It smells really good."
"it's Roasted chicken with boiled broccoli." Boiled broccoli? Hm…The head Pharmacist did say that Gynura aurantiaca had a terrible smell. Shirayuki thought as she took the plat from Zen and started eating. The broccoli is soft after boiled, but not too soft to take away the flavor. With that Shirayuki found a solution to the portal plant experiment. She quickly finished her late dinner and kissed Zen goodnight. She went back to her lab station where Ryuu was asleep. She crushed Gynura aurantiaca leaf into a test tube. Next, she added the ingredients to make the solution mixture shiny. But that shine just took a few seconds before everything dissolved. She put the test tube onto a heating mantle, and boiled it until 124 degree Fahrenheit. Ryuu scratched his nose as he moved. Shirayuki opened a window. The smell was worse than the original plant. She pinched her nose as she worked. But after a few minutes, the solution permanently kept color that she wanted. After cooling the solution off and putting a cap on it, she released her nose and lifted the test tube to the moon. It sparkled and shined brightly. The recipe for this portal plant was finished.
Author's note: Gynura aurantiaca is an actual plant, but the function on being a portal plant isn't true. It's all fiction. But the characteristics of the plant are real.