December sunlight streamed through the stained glass windows of St. Cherry Academy, casting dappled shadows on the floor of the student council office.

Yu Jiuyuan sat behind her desk, her fingertips tracing the gold-embossed program sheet for the welcoming banquet, her gaze lingering for a moment on the line about the "butterfly display segment".

Yuan Xu sent me a message last night, saying that the wing veins of the Aurora Butterfly exhibit different fluorescent reactions under specific sound waves, and he wanted to add an interactive element to the banquet.

"Ah Yuan, I've adjusted the parameters of the acoustic device!" Yuan Xu burst in carrying a laptop, her white coat stained with a few butterfly wing specimens, her eyes shining as if they held a galaxy within them.

“Listen to this frequency…” He tapped on the audio, and a clear, melodious tune flowed out, with a waveform displayed on the screen in sync. “This is synthesized based on the frequency of the star trails around Changbai Mountain; the butterflies will definitely love it!”

Yu Jiuyuan leaned closer to the screen and tapped the waveform with her fingertip: "Lower the peak value by 3 Hz, so as not to scare Miss Tang."

When she looked up, she met Yuan Xu's flushed ears, and her tone softened a bit, "But this idea is great, it will be the most special part of the banquet."

[Yuan Xu: Favorability 85 (unchanged), Emotional fluctuations - Negative 0/Neutral 12/Positive 98 (Positive +3)]

The system panel beeped softly, and Yuan Xu's positive mood improved even more.

Yu Jiuyuan looked at his serious profile as he adjusted the parameters, and the warmth in her eyes faded a little. Pure obsession was like a pre-programmed program; as long as the correct instructions were input, a perfect output could be obtained.

This effortless control makes it the most worry-free item on the strategy list.

In the astronomy club's archives, Hsieh Che-cheng was using a magnifying glass to check star chart data.

The observation records brought back from Changbai Mountain were spread out on the table. The edges of each sheet were pressed flat like a mirror, except for the corner of the bottom sheet, which was slightly curled. That was the spot that Yu Jiuyuan accidentally touched when she kissed him for the second time.

"President, the student council has sent over the seating chart for the welcome-home banquet." A member knocked and entered, her gaze unconsciously drifting towards his lips. "I heard... the president specially arranged your seat by the window."

Xie Zhecheng took the seating chart, his fingertip pausing on the three characters "Xie Zhecheng".

The seat was indeed by the window, overlooking the college's Swan Lake. At this time of year, the lake was covered with a thin layer of ice, resembling a shattered mirror.

He recalled the look in Yu Jiuyuan's eyes during their two kisses, clear yet with a hint of cunning, like a cat that knew how to pluck the strings of a harp.

[Xie Zhecheng: Favorability 17 (unchanged), Emotional fluctuations - Negative 0/Neutral 5/Positive 103 (Positive +2)]

In the world of perfectionists, every variable should be corrected.

But these two uncontrolled touches were like two sets of abnormal data that could not be deleted, making him inexplicably think of the warmth of her lips when he was debugging the equipment.

It was warmer than the snow in Changbai Mountain, but cooler than the incubator in the laboratory, falling right into a range that he couldn't ignore.

He closed the folder, got up, and walked towards the observation platform.

Through the telescope, a thin layer of snow covered the roof of the distant teaching building, and the window of the student council office was lit, through which a familiar figure could be vaguely seen.

The door to the student council office was pushed open with a bang, and Lin Yanran rushed in, bringing with her a gust of cold wind.

He slammed a stack of signed receipts on the table, the gilded lettering gleaming under the light, his tone filled with arrogant annoyance: "That brat from the Su family actually dared to make me wait half an hour, Yu Jiuyuan, I'm not doing this stupid job anymore!"

Yu Jiuyuan looked up from the pile of documents and her gaze fell on his open school uniform collar.

His tie was hanging crookedly, clearly indicating he hadn't taken the reminder to "dress formally" to heart. She didn't say anything, but simply picked up the school rules handbook from the table, turned to the "appearance" page, and gently placed it in front of him.

[Lin Yanran: Favorability 3 (unchanged), Emotional fluctuations - Negative 24 / Neutral 10 / Positive 0 (Negative +2)]

Lin Yanran's face instantly turned red, like a firecracker that had been lit: "You're trying to intimidate me with school rules? Yu Jiuyuan, don't think that just because my dad let me join the student council, I'm really afraid of you!"

“I was just reminding Secretary Lin,” Yu Jiuyuan’s voice was calm and composed, yet carried an undeniable authority.

"All student council members must attend the welcome-back banquet next week in formal attire. If you cannot, I will submit a 'unfit' report to Chairman Lin."

When her father was mentioned, Lin Yanran's arrogance inexplicably diminished.

He clenched his fists so tightly that his nails almost dug into his palms, but in the end, he sullenly grabbed the tie on the table, turned around, and slammed the door shut as he left.

The sound of him roughly tying his tie echoed down the hallway, carrying an obvious awkwardness.

Yu Jiuyuan looked at the closed door, picked up a pen and drew a five-pointed star next to Lin Yanran's name. To tame an arrogant beast, one must use the "family reputation" that he cares about most as a shackle.

In the café, Rong Shenghan was listening to Tang Nianzhi talk about the art exhibition in London from the window seat.

Her curly hair fell over her shoulders, and she would clap her hands gently when she got excited, her eyes almost overflowing with adoration: "...The snow scene in Saint Sakura is much more beautiful than London, especially President Yu, who is wearing a beige coat and standing in the snow, like a water lily in a Monet painting."

Rong Shenghan paused in stirring his coffee, then looked up with a gentle smile: "She is indeed very suitable for light colors."

He looked out the window, where the clock tower of St. Sakura Academy stood out clearly after the snow. "She'll probably wear a white dress to the banquet next week."

“I prepared a red dress,” Tang Nianzhi said in a lower voice, her fingers twirling the tassels of the tablecloth. “Brother Shenghan, do you think… President Yu’s feelings for President Xie are really different?”

Rong Shenghan's gaze fell on the beige figure outside the window. Yu Jiuyuan was coming out of the student council office building, carrying a thermal bag in her hand. Yuan Xu jogged after her, taking the bag with a careful and excited gesture.

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