Both of them had consistently ranked at the top of their grade for years, so there were few students or teachers who didn’t know them.

When they entered the office, only the physics teacher from the neighboring class was there. Seeing them, he asked, “Here to collect homework?”

Sang Ru shook her head with an embarrassed smile: “We forgot to do our homework and were sent here to complete it.”

The teacher widened his eyes in surprise: “Both of you forgot?”

Sang Ru and Zhou Tingzhao answered in unison: “Mm.”

The teacher was speechless, silently giving them a thumbs up.

The chair specifically left for students was in the aisle. Sang Ru moved it behind the desk to place it next to Old Zheng’s special seat, then said to Zhou Tingzhao: “You sit in the inner one.”

Zhou Tingzhao didn’t move: “You sit.”

The inner chair was larger and had a soft cushion, making it more comfortable to sit on.

Unexpectedly, Sang Ru glanced at the teacher’s back in front of them and whispered in Zhou Tingzhao’s ear: “I like it hard.”

Then she sat directly on the outer chair.

Zhou Tingzhao: …

She had already lowered her head and seemed to be calculating seriously. Zhou Tingzhao had no choice but to pass through the gap behind her and sit in the inner chair.

“Wait a moment.” Sang Ru was looking at the problems when she suddenly heard Zhou Tingzhao speak.

She looked up: “What is it?”

Zhou Tingzhao switched the test paper in his hand with hers: “This is yours.”

What else could it be but the test paper that had been temporarily “forged” as hers? Sang Ru chuckled softly, then obediently replied: “Oh.”

Zhou Tingzhao was serious about solving problems, and his answering speed was also good. After filling in the multiple-choice questions that he had initially completed, he continued solving problems, already at about the same pace as her. The teacher in front was probably grading assignments, marking papers quickly, occasionally humming a happy tune, and sometimes sighing in disappointment.

Sang Ru paid attention to these sounds, holding back for quite a while. After finishing the first page, during the moment of turning the page, she finally revealed her true intentions.

She quietly slipped her left hand under the desk and placed it on Zhou Tingzhao’s thigh.

She liked him hard, but there was no mention of liking hard chairs. For a right-handed person with a homework task, the greatest favor was to have her crush sitting on her left side.

Doing homework while teasing a boy—Sang Ru was happy. Heaven knows how frustrated she had been earlier when she couldn’t sit on Zhou Tingzhao’s right.

The person being touched instinctively moved away, and Sang Ru’s touch only lasted a second before meeting empty air.

She turned her head and met Zhou Tingzhao’s gaze.

Zhou Tingzhao’s expression appeared calm, only his brows slightly furrowed. Sang Ru pouted and reached out again to scratch his leg.

This time, Zhou Tingzhao didn’t move away. He lowered his head and wrote something on the draft paper, pushing it under Sang Ru’s nose.

The handwriting was neat yet somewhat hasty, seeming a bit different from his usual style, still elegantly attractive. Two large characters stood out starkly on the paper, reading: “Focus.”

Sang Ru’s left hand, which had scratched him, didn’t withdraw. She extended her right hand and scribbled on the paper: “No.”

After thinking for a moment, she continued writing below: “Don’t move, I’ll focus better!”

Zhou Tingzhao tilted his head slightly to look at what she had written, paused for a moment, then returned his attention to the problems.

He remained silent without responding to her, but indeed didn’t move away again.

Satisfied, Sang Ru’s index finger tapped lightly on his leg from time to time as she continued solving problems with a good mood.

The joy of a female rogue was just that simple.

After a while, the physics teacher mentioned needing to attend a grade-level discussion meeting. He packed up his things and left, even thoughtfully closed the door behind him to prevent anyone from disturbing them.

Perfect timing and circumstances. Sang Ru had just finished writing the answer to a problem. Her fingertip very lightly scratched him again, and she heard Zhou Tingzhao unexpectedly inhale sharply.

A very soft sound, as if he were restraining something.

Originally, she was just casually teasing him, but now some truly mischievous thoughts arose.

Sang Ru slowly moved her left hand, gradually shifting from his thigh to the root of his leg, and then toward the more central area. Before reaching her destination, her hand was suddenly caught.

Zhou Tingzhao finally couldn’t bear it anymore and repeated through gritted teeth: “Focus.”

Sang Ru avoided addressing this comment and instead softened her voice, complaining accusingly: “You’re hurting me…”

Zhou Tingzhao instinctively loosened his grip, then let out a muffled groan.

His lower body was suddenly encased by a hand—he had fallen into her trap again.

Under her palm, a bulge had already formed. Sang Ru squeezed it and said with amusement, “How are you already hard?”

Zhou Tingzhao responded hoarsely: “I’m not.”

“So stubborn,” Sang Ru immediately exposed his lie, then added, “Your cock is even harder.”

How could she, at this age, do these things and say these words?

But his nerves were indeed becoming increasingly excited, and the teasing sensations from below didn’t allow him much room for thought.

Her movements went from bottom to top, then returned the same way, scratching him through his pants. Finding the direction of his shaft, Sang Ru traced along the edge to outline his shape—a very large and thick one.

She suddenly wrapped her hand around his penis and began stroking it through the fabric. Her left hand wasn’t very good at this, so she frequently paused.

Zhou Tingzhao gripped his pen tightly, looking down at the test paper, but unable to solve any more problems.

The thought of her stroking him while wearing a school uniform already had him on the edge of exploding with pleasure.

Her awakened sensuality during their student days was truly unbearable.