@yellow it would be told soon about the secrecy but the parents may not be them

The students and teachers were huddled behind the school with the headmistress overseeing the situation in the front. She was befuddled that a car would come through the steel gate and ram the front of the school. It was also beyond comprehension that a note was left in the driver's lap as it was a suicide.
She walked to the back to check on everyone as the damage was being assessed and quickly received a call. She kept her voice down to a whisper as the conversation was going along and finally slid the phone back into her pocket.
"Everyone, please follow me." Her stern voice ringed in the children's ears as the teachers escorted them out of the school grounds.
Sayu quickly looked for Riho and saw her with Kamei as they were smiling with each other. Kamei raised her thumb up satisfying the teacher's concern. Sayu turned back to the front and Riho started to run to the front of the line as the representative should and pressed her finger into Sayu's leg.
"Yes, Sayashi-chan."
"Eririn came back to see me." Her gleeful pep to her voice calmed the nerves of the teacher.
"That's good." Sayu responded as they were led into a building with all the children and teachers. "Where's did she run off to?"
"She wanted to get some food." Sayu quickly nodded and turned her attention to the headmistress.
"We will be here for the time being. Sorry for not having other activities here but it is for our safety."
She closed the door behind her and the lights were turned on in an empty warehouse. The students sat in circles as they communicated to each other except for Riho who was by Sayu and pointing toward the bathroom across of them. Both walked to the bathroom and noticed it clean so Riho ran off to do her business as Sayu stood guard outside the stall.
"Do you think the car was meant for me?" Riho asked catching Sayu by surprise.
"Why would anyone want to hurt you?"
"Well... I saw something and now I have to beware of my surroundings."
"Like... a murder?"
"A robbery." Sayu bit down on her lip as the knocking on the door was getting louder.
"Riho, can you finish up your business quickly?" Sayu heard a flush and a rush of girls came running into the stall as the fought over the usage.
She washed her hands and wiped them on the pink-colored paper towel as they both headed out. Riho took Sayu to the side and began to explain her situation. Her details were precise to the point even if it was two years ago but everything she had explained was the picture.
Sunday afternoon at 3:00, two men robbed a store, three shots were fired, one hit the store clerk, and the other two hit the window and the wall. The clerk managed to survive as the shot hit the shoulder but the two men ran away into a white van and drove east. From that distance, Riho pinpointed everything and showed that they went into a certain lane.
A day later, they were caught by the assumption that they hid out in the area Riho had predicted from the point of view was blocked. However, the two men were high ranking officials and knew of a witness from that area but assumed that a child would not have that memory to describe and involved her parents into the picture.
The headmistress stepped back into the room after the quick talk and dropped a box filled with bentos for everyone. Sayu grabbed one for each of them and continued on the conversation with everyone eating. Eventually, their energy was sapped by the lack of activities and everyone slept leaving the teachers to watch over them as the evening came.
Sayu wasn't sure of the situation but the kids were on their last leg through the situation and then a couple appeared at the front door with the headmistress. They walked through the kids and stopped in front of Sayu with a piece of paper.
"Please sign this." She said sternly as Riho looked up at them.
"Who is this?"
"It is none of your business."
"I want to know." Sayu shouted and the head mistress pushed her back.
Sayu held the back of her head as Riho was being dragged away. Her screams were ringing in Sayu's ears and she grabbed onto Riho. She looked up at them with a hint of drowsiness.
"This is not her parents."
"How would you know? You only have been here less than a day."
"I can tell on her face. I want to see her real parents." The three started to talk to each other and swiftly walked away.
"Thanks Ms. Michishige for no dinner." Her last words saw the students turn on Sayu as Riho guarded her.
Sayu lay onto the floor seeing the lights for one more second before it went dark. The teachers wiped the sweat off her as she wavered between consciousnesses and just prayed that the night would be over soon.