"Wait wait wait!!!!"
He suddenly thought of something, almost leaping up from the ground.
"Tomato sauce!"
"Is this tomato sauce?!"
An image flashed through his mind—the trash can in the Teacher's Office!
He remembered, there was a lunch box in the trash can smeared with a dark red substance!
He recalled the trash can was placed in a dark corner of the office, and at first, he hadn't seen clearly what it was, only remembered something dark red and viscous, which now seemed—
"It's tomato sauce!!"
"So the class teacher ate food containing Tomato Element!"
"Yesterday?!"
His memory began to race back, and he thought of the scene where the security guard walked through the mist with a group of chefs chained together.
He thought of the chef in green apron mixed in the queue of chefs in blue aprons!
That chef was holding a lunch box filled with tomato meat sauce pasta!
And the first destination or via point of that group was—The Teaching Building!