Lu Xingyan joined the couple and began eating the food she prepared for dinner. As she did, while the couple in front of her ignored her, she would steal glances at Fan Jingli and would smirk inwardly whenever he ate the food. She was careful not to be noticed.

After they ate, since it was Lu Weichun's turn to wash the dishes, she headed to her room but before she could do so, she heard Fan Jingli say, "I'll use the restroom..." He was clutching on his shirt, sweat bead trickled down his temple.

Lu Weichun who had her back faced on him since she was washing the plate one by one casually replied, "Okay. It's at the corner left of the hall." She obviously didn't notice anything strange.

Lu Xingyan smiled and was satisfied before she directly headed in her room. That Fan Jingli would have to stay in the restroom for a while. This was all according to her plan. She bought a diarrhea-induced drug a few days ago, preparing it just so in case she would need it. She thought of sprinkling it's powder in the man's food if ever she caught Lu Weichun making lunch for him for school. Who would have thought that she would end up using it with the food she prepared? It may be childish but she hated him.

After a while, Lu Weichun entered the room they shared, looking all worried as she approached her. "Xiao Xing, can I borrow your car? I have to drop Jingli at his place. He's not feeling well."

Lu Xingyan who was once again buried in her books, raised her head just to look at her. "If you're going to drop him then I'm coming with you." If she could, she would drop him in the sea instead and allow the sharks to eat him limb by limb. Just the thought of it already brought delight in her. She was even willing to take a video of him.

"You don't have to." Her older twin said, grabbing a coat from the cabinet.

"Yes, I don't have to but I will. It's my car." She stood up from her seat and took the car keys that were inside her drawer.

In the end, Lu Weichun wasn't able to say anything since her sister has a point.

Lu Xingyan directly went to the parking lot without helping her sister support her boyfriend. No, she was not going to even touch a strand of his hair.

"Maybe we should really go to the hospital, Jingli." Lu Weichun said while she was in the backseat, sitting beside her boyfriend.

Fan Jingli was already uneasy enough that Lu Weichun caught his awful smell earlier in the restroom. He was not going to embarrass himself further by going to the hospital just to be treated because of diarrhea. Even if he looked like he was having a seriously sick, his face pale to the point where it looked like blood was drained out of him. His stomach was still feeling unwell and the scent of a faint unpleasant smell was coming from him.

"What's that smell?" Lu Xingyan frowned upon catching on the scent since they were inside the car.

"C-can you drive faster?" He stuttered.

This was the only time that Lu Xingyan listened to him. She didn't want her car smelling like poop after all. She even opened the window just so the nasty smell won't circulate inside.

Luckily, she was able to reach his place in time and as she did, Fan Jingli rushed out of the car without waiting for them just so he could run to his place.

"We still have classes tomorrow, Jiejie. We can't stay here even if you're worried." Lu Xingyan hurriedly said before her sister can even follow him.

"B-but he's not fine."

"He's going to live. He's only having diarrhea so close the door, we're leaving." She looked ahead, ready to drive them out of the place.

Lu Weichun didn't have a choice since she knew her sister was correct so she closed the door and sighed.

...

Within the week, during lunch break, Lu Xingyan and Han Yehan went to the college campus to begin their investigation after they were able to have information on where his department was located.

They were in disguise just so no one would recognize them. Lu Xingyan didn't want to be seen by one of Fan Jingli's friends and report her presence to him.

She was wearing boy's clothes and also had a wig on. She made sure to put on makeup just so she could have normal looks to avoid being noticed by others.

On the other hand, Han Yehan was just wearing a facemask.

Entering the building where Fan Jingli's department was located, they began looking for him, room by room until they finally saw him in one of the rooms.

He was sitting beside another girl, his arm resting on her shoulder.

"Say, should we skip the next class?" Fan Jingli said to the girl beside him with a smirk on his lips.

"Are you suggesting that we should have some lessons on our own?" The girl smirked back, going along with his flirt. She leaned forward to his ear just to whispering something.

When Lu Xingyan saw that scene, she burned with fury. She clenched her fists tightly. Her instincts were right! He really was a flirt and a cheater!

But this was not enough evidence. She needed to snap stronger evidence. A shot where he's kissing the girl should be enough.

"We should go back. Lunch break is almost over." Han Yehan whispered beside her.

"No, we're skipping class today. If you don't want to accompany me, then you can go back." She was not going to let this chance slip.

Han Yehan sighed. It was not like he could leave her alone. He already promised her that he was going to accompany her. Skipping a class wasn't a bad idea anyway.