My senior sister is not a human being!

"That's right." Song Xinghui didn't go to the toilet to smoke before class started. After the military training, he went back to wearing headphones as he did on the first day of school, nodding slightly as if he was listening to music.

He was scrolling through his phone when he suddenly leaned forward and approached Su Yuchen: "The latest news, our magic theory teacher has changed."

Su Yuchen turned his gaze from the window to look at him: "Can university teachers be replaced temporarily? Are you sure you didn't ask for leave for something?"

"She really has been replaced." Song Xinghui said in an unusually affirmative tone, "And she seems to be a young and beautiful new teacher... She must be better than the male teacher who was replaced."

He pointed around the class and said, "There are so many boys here. If the teacher is also a man, there will be no motivation to attend class."

"Who is the new teacher?"

"I don't know." Song Xinghui shrugged: "The teacher's name has not been updated. Maybe the system is slow to respond?"

"Then how do you know the teacher of this course has changed?"

"There's nothing I don't know."

"hehe."

He is so confident and righteous despite the contradictions in his words. He is quite thick-skinned.

As class was approaching, students gradually returned to their seats. Su Yuchen looked out the window and frowned slightly. Why hadn't misfortune come yet during the fifteen minutes of get out of class time from 8:30 to 9:45? Was he trying to hold back a big one?

Will the walls collapse or the roof fall in?

Jingle Bell……

As the bell rang, the classroom gradually became quiet. The news that the basic magic theory teacher had been replaced had spread in the class group. Of course, everyone was curious about the new female teacher.

"Fuck!" Song Xinghui cursed in a low voice, then quickly patted Su Yuchen's arm: "Brother, look in the group, do you know who the female teacher is?"

"who……"

Su Yuchen, who had just turned his head, narrowed his eyes and looked at Tia Youfei in surprise as she walked into the classroom wearing a knee-length grey skirt, a black knitted cardigan, and low-heeled shoes. Why did she end up in the undergraduate school? And in this classroom?

"That's her!" Song Xinghui looked straight at Su Yuchen: "I don't believe you don't know that she is the teacher of this course!"

"New teacher?"

"Keep pretending. You and Senior Sister Yufei have such a good relationship. Didn't she tell you?"

Su Yuchen ignored him and all the glances from his classmates. He just watched Senior Sister Tia walk to the back of the multimedia space window teaching all-in-one machine on the podium, adjust the frame of the glasses, open the courseware, and speak in a cold voice: "Class monitor, take the roll."

Yae Mio took the roster and started to call the roll. Christia, who had opened the courseware, stood up straight. Her long golden hair naturally draped over her shoulders. She crossed her arms over her abdomen and tapped her left arm with her right index finger.

Under the slightly oppressive gaze, the freshmen in the class couldn't help but lower their heads - Christia used a little mental oppression magic. As for the reason...

"Su Yuchen!"

"To!"

When Su Yuchen answered "here", Christia's gaze turned directly over. The eyes behind the glasses winked at him playfully, and the corners of her mouth raised a beautiful arc.

"Are you surprised? Are you happy? And...exciting?"

Su Yuchen understood Christia's lip language.

Surprise is surprise, happiness is definitely happiness, but what the hell is excitement?

But... no wonder there was no 'misfortune' during the fifteen-minute break, it turned out to be because she was very close to him.

Besides, isn't she only in her second year of graduate school? How come after a month of military training, she has become a substitute teacher in the Department of Magic Engineering?

"Look at your phone."

Su Yuchen understood Christia's lip reading again, took out his cell phone and saw that it was a message she sent to him: Come to my office after class, 709 on the Heyi Building.

……

"get out of class is over."

After finishing her words, Christia took the lesson plan and walked out of the classroom. When Song Xinghui saw her leaving, he stood up and said, "Su Yuchen, tell me, is Senior Sister You Fei upset because of you..."

wow-

Su Yuchen jumped down at the sound of the window opening. How could being gossiped about by classmates be as fun as going to the office to see "Teacher Tia"?

"Fuck, buddy, this is the fourth floor, don't..." Song Xinghui quickly leaned over the window, pretending to be anxious, but apart from the scolding of the discipline committee patrol officers at the bottom of the building, there was no trace of Su Yuchen.

"You ran pretty fast, but your gossip failed." Song Xinghui curled his lips, looking bored.

As for Su Yuchen's safety, no one would worry. It was just the fourth floor, a small matter for the students of this university.

Su Yuchen knocked on the door of office 709 on the Heyi Building.

"Please come in."

After getting the answer, Su Yuchen pushed the door open and walked in, looking at Christia, who was leaning on the edge of the desk with her arms crossed over her chest and a smile on her face.

The office is not big and she is the only one there, because it is a single office specially allocated to outstanding talents like her.

Gently closing the door, Su Yuchen looked at Christia without blinking: "Senior Tia..."

"You called me the wrong name." Cristia walked up to him, her golden eyes behind the lenses smiling, "You have to call me 'Tia teacher' now."

Su Yuchen hesitated for a moment: "Teacher Tia."

Christia touched Su Yuchen's head, and the corners of her mouth raised in an unusually charming arc: "Senior sister becomes a teacher, how does it feel?"

"Ok?"

"On the night of the Mid-Autumn Festival." Christia moved closer to Su Yuchen and asked, "Have you forgotten what you did to me, your teacher?"

Su Yuchen opened his mouth, and the three different names of "senior", "sister", and "teacher" converged on Cristia...hiss~

Cristiana sniffed, the virgin schoolboy was in heat, the blood in his body became thicker.

"Brother Yuchen~" Christia said in a gentle voice: "In the future, I will teach you a lot of knowledge."

……

Chapter 89 Teacher Tia’s Reward

Looking at Christia's eyes so close to him, Su Yuchen remembered what she said some time ago that she could teach him some knowledge.

I don’t know if the knowledge is decent or not, but Senior Tia has indeed become Teacher Tia.

The only difference between her and the leader of the 3D zone is the word "Law". No, it's Teacher Tia.

He took a step back, his back pressed against the door, and subconsciously used the same name as before: "Senior Tia, you are too close."

"Don't you like it?" Christia chuckled and took a small step forward. She didn't care about the name, and she gradually became familiar with it: "Office, I... can give you some special treatment."

"Eat, what to eat?" Su Yuchen tensed up, his forehead sweating slightly, and his mind seemed to be stuck.

"Then you need to take a look. What can be eaten in this office?"

Gulu.

Su Yuchen's eyes wandered, and he whispered, "Are there any fruits?"

"fruit?"

"Well... like grapefruit."

"Grapefruit?" Christia understood immediately. She didn't expect the virgin junior was so good at using metaphors.

The smile on her face widened as she spoke softly, "There really are grapefruits, but do you like red grapefruits or white grapefruits? Or..."

Leaning forward, Cristia whispered in his ear, "Do you like both kinds of grapefruit?"

"I..." Su Yuchen's forehead was covered with sweat. Cristia took a deep breath of the fragrance emanating from him: "Student Yuchen, please answer the teacher's questions quickly."

"Otherwise, the teacher will think you don't respect me...you don't even know what I've taught you, huh?"

"Eat both together!" Su Yuchen said in a low voice.

"Louder!" Christia raised her chin, her eyes as cold as a teacher's: "Didn't you eat breakfast? If you know the answer, just say it out loud!"

“I like to mix the two kinds of grapefruit!”

Cristiana smiled with satisfaction: "The answer is correct, there is a reward for you."

???

Su Yuchen looked up at her. The light emanating from her eyes behind her lenses... seemed a little familiar.

Is this because of the blood again?

Hey, hey, hey, I didn’t drink this time. What if I can’t pretend to be drunk and you reveal your true identity?

This play can't go on!

but……

Opportunities like this don't come often, so take advantage of her if you can. At worst, you can pretend you can't stand it and run away before she reveals her true identity.

Su Yuchen took a deep breath and said, "Teacher, what is the reward for answering the question correctly?"

Unexpectedly, Christia took a step back and opened the wardrobe under Su Yuchen's surprised gaze. There was an unopened pocket in the wardrobe.

"Student Su Yuchen." Christia turned around, her cheeks slightly red and she looked charming: "A white shirt, hip skirt, black stockings, and high heels, she looks very beautiful, isn't she?"

Su Yuchen's mind suddenly flooded with countless famous teacher's classroom scenes. There weren't many students, but there were bald heads, and...

bah bah bah!

"I don't like it!" Su Yuchen answered decisively: "You can't wear this kind of clothes!"

Are you kidding? There are so many boys in the Department of Magical Engineering, why should we show them Teacher Tia dressed like this?

Cristiana smiled and said, "I can't wear it during class. I only give it to you...during private lessons."

Su Yuchen looked at Christia. Her attack today was particularly fierce, and he felt he couldn't resist... Was it because the smell of blood got to her head?

Cristiana turned her head and looked into the closet: "There is still one thing missing."

"What?" Su Yuchen asked subconsciously.

"Pointer!"

"What do you need a pointer for?"

"Shouldn't students who don't listen to the teacher be taught a lesson?" Christia said without looking back. "For example, if a student is dazed and doesn't want to study, and is asked to move but is too lazy to do so, shouldn't we use the teaching stick to urge him to study quickly?"

Teacher Tia, you have a wealth of knowledge in your mind!

"It hurts a lot when you're hit with a blackboard teacher's cane." Su Yuchen spoke softly - having this conversation with her gave him a sense of spiritual satisfaction.

"If students are obedient and actively learn, then they won't be used, right?"

Looking at Cristia who was still rummaging in her pocket without turning around, Su Yuchen walked towards her: "The students taught by Teacher Tia must be very obedient."

"you sure?"

"I'm sure." Su Yuchen stopped and looked at her fair neck vaguely exposed between her golden curly hair: "As long as the teacher teaches me the knowledge points, I will definitely study harder than anyone else."

"Teachers like students like this the most." Christia gently closed the door of the closet. She turned around and her cheeks were as bright as the sunset glow. "Is Yuchen a good student?"

"A well-behaved, serious and hard-working student!" Su Yuchen said in an affirmative tone.

"Close your eyes and I'll give you a reward."

Su Yuchen obediently closed his eyes immediately. What reward would she give him? A kiss?

Come to think of it, I never kissed her lips properly on the night of the Mid-Autumn Festival.

Something seemed wrong with the order of the night.

Thinking of this, Su Yuchen heard a slight rustling sound, and then felt a cool, silky and slightly warm touch tied around his wrist, circle after circle.

"All right."

Su Yuchen opened his eyes and immediately looked down at his wrist. This was...

Stockings?

Transparent skin tone!

That's what she wore during class!

Is this a declaration of sovereignty?

"This is a reward." Cristiana raised her right hand and flicked his forehead gently: "Do you like it?"