As for Kohta Hirano's group they passed by a few survivors on their way to the woodshop classroom, but the other students were too scared to go with complete strangers or they weren't in the right head space to listen to reason.

After running downstairs, Kurumi peaks around the corner first before the survivors can get to their destination which is located near the middle of the management building.

While there was blood splattered on the walls and floor, there was nobody in sight. So that gave the three of them the opportunity to run down the deserted hallway.

Before they knew it, the three students make it inside the woodshop classroom. Thankfully the room is untucked with everything nice, neat and put away like it was yesterday.

While the girls moved towards the teacher's desk in the front of the classroom, Kohta closed and locked the door. Unfortunately, he didn't realize that he was a little too loud and the sound traveled down the hallway reaching the ears of nearby zombies that were near the stairs and in a few rooms.

Kohta joins Honoka and Kurumi who were taking out all the nearby tools, and laying them out in front of them. "Are we gonna use these as backup weapons?" Kohta questions Kurumi and Honoka, as he approaches them and walks to the other side of the teacher's desk to where his back is facing the chalkboard.

"Hirano-kun, do you how to build something like a potato gun or something like that with what we have? Maybe you can use this nail gun, like in that Neil Gibson, movie?" Kurumi asked as she points at the gas powered nail gun she placed on the table top, Kohta movies to pick it up, as he inspected it.

Honoka asked her upperclassmen, if they like movies, but she is interrupted by a loud bang on the door.

Everyone snapped their heads to the door that they entered from, and the students see the growing number of zombies outside the door.

"We got an extra tank and nails. We're all set." Kohta starts muttering under his breath as he begins to work on what he has. Kurumi turns to Kohta in alarm, "Why are you standing there as cool as a cucumber?! Come on, Hirano-kun! We need to leave right now!! THEY'RE in the hallway!!!" Kurumi shouts in alarm as sees with her own eyes the number of zombies outside the classroom are increasing. She's not sure how long the door will last.

Before the girls know it; both sliding doors collapsed inside the classroom, causing a tsunami of undead to rush inside the room as Kurumi and Honoka scream in fear.

Just when a zombie was about to lunge for Honoka, a nail flies past the two girls, and kills one of the zombies. The two girls back away and watch Kohta in disbelief; he is smiling as he continues to shoot down each zombie that enters the room.

Back on the rooftop, the survivors part of Takashi's group, make a plan to escape with the firehose. The students have looted the astronomy clubroom, from anything that can be useful for their survival, was packed up in a spare book bag that was in the room.

Hisashi had also grabbed a pair of mops and broke off the brush parts so he and Rei can have makeshift spears.

In the beginning, Hisashi was confident in his skills at being a black belt in karate, but then he saw the other members of both the karate clubs and other various martial artists clubs were either already turned or were torn to pieces; as they too, that they were too overconfident in their abilities against the overpowered undead.

Hisashi and Rei, weren't the only members in the group with weapons. Saya had found a hammer, Teruko had found a blue jersey jacket inside the book bag and she had put it on, her weapon of choice is the tripod stand for a telescope, and Emi had grabbed a fire extinguisher as she is carrying the book bag full of all the all supplies the survivors could find.

While Hisashi and the girls were inside the astronomy club room, Takashi stood outside with the firehose in his hands. Takashi calls out to Saya asking if she is ready as the horde begins to break apart the barricade the students have set up.

As the water began spraying out of the hose, Takashi approaches the barricade when he lifted up his left leg and slammed it down on the center of the cabinet.

The force of the impact, sent the barricade and a horde of zombies down the stairs and into the fence. There was still a few surviving zombies, so Takashi used the firehose on the remaining zombies till all of them were killed.

When it was over, Takashi called out to shut off the water, and then the others began to climb downstairs behind him. All the zombies that were once on the rooftop of right side of the management building, had come to the stairs and they were all killed: either by being crushed by the crashing barricade or they were knocked down the stairs by firehose and sent falling to the ground below.

Of course, there was two bodies that haven't risen just yet with the rest of the horde. They were both male students where already bitten before they came to the rooftop and their panicked screams alternated the zombies who surrounded the boys and killed them. 

Even before that, the gym teacher who was the advisor of the Judo Club, Mr Takayama, had ran up to the rooftop after the SDF flew over their school. The others couldn't see Mr Takayama's visible bite mark on his neck, and the panicked teacher backed into the fence, before he climbed over the fence to fall to his death to escape the horde of former students.

After a moment of silence, Takashi takes the first step downstairs, he dropped the firehose before he turned to the others and asked them if they were all ready to go. Everyone all agreed that they were ready.

But before they left, Takashi approached one of the tables and used Venom's strength to pull off one of the table legs to use as a weapon.

Afterwards, the group of students began to approach the door that Mr Takayama previously came from. The other students were cautious, but Takashi told them to be calm down as there was nothing alive or undead on the other side. Then Takashi casually opened the door and stepped inside the small building.

The others peak through the open doorway, the area was used as a break room and spare storage area. The room is about half the size of a classroom, next to the door the students are peaking through there was a knocked over recycling can, and next to it was two vending machines: one full various drinks and the other full various ready to eat meals.

In the center of the room, there was a circular bench; were there is a arm laying in a pool of blood, in the corner there is some cabinets and a sink as a small stack of buckets with a bottle of bleach is in sight. Across the other side of the room, is the other door that leads to the left side of the management building. Next to Takashi was the stairs and a railing that went downstairs.

The whole area was covered in blood stains on the walls and floor.

There was nobody in sight, so the others entered the lounge area, as Takashi moves towards the other door as he slowly opened the door. Everyone else can hear the sounds of moaning and chewing as the door opens up all the way and the survivors can see numerous zombies shuffling around the open area as  there was the bodies of four students being eaten by the zombies.

The students were already long dead as their normal skin tone has started to turn a grey color. And, as this side of the rooftop, didn't have an extra space for any clubs or an area for the students to climb to escape the zombies that didn't result in them to fall to their deaths. It meant that everyone who ran to this section of the roof would be trapped till they were killed.

Takashi softly closed the door and locked it, before he turned his attention to the vending machines. Takashi asked the Rei and Hisashi to keep their eyes out for more zombies as he asked the girls, on how to open the vending machines without causing too much noise.

After some minutes investigating the weak spots on both machines as none of the students had their wallets on them. So Takashi asked the others to step back, and waited til the girls took a couple steps backwards.

Once they far enough, Takashi had transformed into Venom's form again, and with his advanced eyesight, he could easily spot which locations to hit.

The sounds of two large banging sounds of metal rang in everyone's ears, before the sounds of multiple items falling filled the tense silence.

Moaning from downstairs, had caused Rei and Hisashi to move downstairs and quickly take out the approaching undead. Teruko had moved towards the other door, and pressed her ear against the cool metal.

Because of how many zombies were on the other side, Teruko was worried that the undead creatures heard the noise coming from the vending machines and would start to approach.

Luckily to her relief, the building seems to have muffled the noise as she can't hear the zombies getting closer. Teruko let's out a sigh of relief before she turns to look at Takashi and the other two girls, and she saw Takashi had turned back to his normal self and he is helping Emi and Saya pack up all of packed hot food, with various hot and cold drinks in the bag the found earlier.

Teruko turns to the cabinet next to her, and she briefly wonders if there is more bags to help Emi carry all the food supplies.

So she turns and walks towards the cabinet door, and raised her right hand to open the door. She is stoped by Takashi who suddenly grabbed her hand out of nowhere. Teruko's face begins to heat up as she turns to look up at him and ask why he grabbed her when she stopped herself as Takashi wasn't looking at her. Instead he was looking at the cabinet, they were standing in front and that's when she began to hear it.

Teruko backs away as Takashi stands up in front of her, before he opens up the cabinet door and a body falls out. The body was that of a female student with long mid back length navy blue hair, and who wore the normal sailor uniform, with the green and white indoor shoes, meaning that the girl is a third-year student.

The girl lets out the same haunting moans as the other zombies as she slowly pushes herself off the floor and into a standing position. When the girl's face is revealed, she had a large bite mark on visible on her neck.

However upon seeing her face, the only person who was distressed upon seeing the zombie was Emi Tachibana herself.

"O-o-onee-Chan!!?!" Emi exclaimed in shock and heartbreak as she stared at her older sister's reanimated corpse, in horror. Emi's revile caused the others to either gasp or flinch in shock.