Weak Stomach

Riding on the small scooter, Su Bai arrived at school without delay and walked into the classroom as usual.

Purple Jade strutted beside him, while the Little Tyrant hugged and chewed on its volcanic rock slowly with its head lowered.

With a bang, the Little Tyrant's head hit the doorframe. It raised its head to reveal an unhappy expression. (* ̄〈 ̄) It was about to bite the door, but when it recalled Su Bai's instructions, it moved away unhappily, instead.

For some reason, it liked walking in a straight line and hated taking detours. It stepped on everything directly on the road and only reluctantly made detours if it could not walk past something.

Sitting in the first row, a trace of hatred flashed past Shi Lei's eyes at the sight of Su Bai, but he quickly lowered his head again.

Suddenly, he realized something puzzling. Why did Su Bai have two pets following behind him? Why was that thing naively chewing on a rock?