Inside the school infirmary, the school nurse Ms Marikawa was getting help by her assistant Kazu Ishii, her coworker and friend Ms Hayashi and several other students as they cared for the students who came to her for their bite marks after they escaped their attackers.

Currently there was five more students; 2 girls and 3 boys, who were getting their injuries patched up as slowly they grew weaker.

Everyone in the infirmary was careful not to be too loud as Yue explained what she saw earlier on how those who have turned will go after and attack anyone or anything making noise and she explained how she witnessed other students who were silent managed to escape without being attacked.

The two teachers in the room, quickly moved around trying to save their injured students; but Ms Hayashi, Yue and Teruko were doubtful as they witnessed what happened to those who have been bitten.

Although, some time had passed since the last student, a male third-year student, who got bitten on his right shoulder. And that was 30 minutes ago, and while the bite mark had seem to stop bleeding it didn't mean that the boy wasn't completely safe.

As now he had started coughing up blood just like the other four students who came before him.

Before the others in the infirmary who weren't bitten can know it, the five students went from violently coughing to pained screams till they died.

The five students either died on the floor or one of the beds. Because of where they died, nobody was looking up to face the windows that show the hallway of the classroom building.

The sound of glass cracking, caused the survivors to fearfully look up, to face the windows just as the windows shattered as a horde of zombies wearing the regular uniforms had broke through the glass easily.

And not only from the hallway but also behind the survivors where the athletics field is kept, as another horde of zombies wearing the school's gym uniforms broke through the windows, as even the five students who died earlier had now stood up and joined the horde; successfully trapping the survivors in the infirmary as the zombies pushed themselves through the windows and moved towards them.

Kazu and his classmate Okada, had picked up makeshift weapons as the move to protect the rest of the females of their group. Kazu had a IV stand as his weapon as Okada has a mop as weapon.

A sudden scream of pain altered the group's attention, and everyone turns to see Okada had been grabbed by the zombies as they pulled him to the floor and tore him into pieces as his screams echoed out loud, for all to hear. Kazu was alarmed and screams out his classmate's name in anguish.

The screams and sounds of panic, had reached the ears of another survivor as well.

There was simply too many zombies in the infirmary, as eventually Ms Hayashi and Teruko had both spotted the crutches in a corner, and they rushed forward to help Kazu. Only, their help wasn't wanted as another person entered the infirmary and had easily and effortlessly killed the horde of 20 zombies in the room.

The person who effectively killed all the zombies in the infirmary is revealed to be a single person. That person is a female student with long waist length purple hair with a triangular frigid that reaches the tip of her nose, she has sapphire blue eyes, pale skin, she has a athletic and curvy build with large D-cup breasts as she stands at 5'8 in height.

She is wearing the full female uniform with a knee length skirt, black knee high socks and the indoor shoes. Her name is Saeko Busujima, a third-year student and captain of the Kendo Club.

After all the zombies were killed, Saeko approached the survivors and asked them if they were bitten, to which everyone said no that they weren't, but everyone's eyes landed on Arata Okada's lifeless corpse.

Saeko's gaze turned to look at the mangled corpse of another student whose body begins to start twitching. "His name was Okada Arata, and he was my classmate." Kazu spoke up after he relaxed his tense stance, next to him, Ms Hayashi and Yui was helping Izumi to stand up.

Okada's body let out a groan as he begins to sit up, before Saeko swiftly turned around and slammed her wooden sword on his head, killing the newly turned zombie. Saeko turns back to the others, "Hurry up and pack what you can carry. I will cover you until it's time to-!" Saeko was cut off by the sound of a door slamming to the floor making everyone turn towards the sound to see a trio of zombies break down the door, that connects the infirmary to the guidance counselor's office.

Nobody could see it, but Saeko was secretly smiling as she faced the trio of undead.

Back in the management building, Takashi's group and who's joined by Emi's group had relocated in the wood shop classroom, to find more items to use as weapons.
The number of survivors in Takashi's group had increased to 12 survivors;
Saya Takagi, Kohta Hirano, Takuzo Suganuma, Naomi Hashimoto, Momo Kawamoto, Ryusei Kizami, Yumi Miyagi, Ren Mishimoto, Emi Tachibana, Toshimi Niki and Misuzu Ichijou.

Everyone moved around the room as it was just like the art room; completely untouched since before the intercoms came on. Kohta had been the one to close and lock the door the survivors came from, but he was a little too loud as some zombies down the hallway had heard him.

Even though Kohta was having the time of his life by using a real gun they were running low on ammunition, so he decided to make a nail gun, as there was the needed equipment at the teachers desk.

As Kohta was grabbing what he needed, there was a sudden banging on the door, gaining everyone's attention. All eyes turned to see zombies had gathered up and started to bang on the door, this started most of the girls of the group as Takashi called out for Takuzo and Ren to help him by the others time to collect what they need.

Takuzo had used batteries he found and some spare wire parts and so he drilled nails into his baseball bat, to basically make a fly swatter baseball bat as he even removed his sports towel and put the cloth in his blazer pocket as he stood on Takashi's left. Ren had grabbed a sledgehammer as his weapon of choice, and like Takuzo he modified it to were there was steel plates on both sides of the sledgehammer to send the zombies flying.

As for Yumi she was currently working on a new type of weapon; she had the parts of a few different broken tool types and now she got the idea to build up a new weapon she can use.

Soon the windows began to crack under the pressure of the undead horde so Takashi called out to Kohta to take out any of the zombies that mangled to either get too close for comfort or had survived their assault.

Before Kohta could reply the door caved in as broken glass went flying. Behind the doors was a horde of zombies hungry to sink their teeth into their former classmates.