overweight guy with glasses, but is actually a gun enthusiast. He credits this to a visit to America, where he trained with a former Delta Force member for a month. In the beginning of the story, Saya finds Kohta cringing in the hallway as students run about in a panic. They hide in a classroom where Hirano is able to put together a nail gun rifle powered by gas cartridges. Kohta has an unrequited crush on Saya. Kohta provides long-range cover when Takashi rescues Alice Maresato from approaching zombies after Alice's father is killed. At Saya's mansion, Kohta is confronted by some of Takagi's followers who demand that he surrender his weapons, but Kohta refuses saying this is the one thing he was good at and that he wants to protect Saya. The rest of the group, including Saya, support him. At the shopping mall, Kohta develops feelings for the police officer trainee, Asami Nakaoka, after helping her subdue an angry mall survivor. He spends some quality time with her, and convinces her to join the group. Unfortunately, the friendship is short-lived when Asami becomes trapped while attempting to save a boy in the parking lot. She shouts for Kohta to make it so that she will not become a zombie and cause pain to others around her. Kohta kills her and later finds himself in shock, but he is set straight by Shizuka, who uses a psychology trick of ordering him around like a sergeant. Kohta uses a variety of firearms; he favors the AR-10 (illegally modified to resemble an SR-25), which he uses to take out targets from a distance. During the raid on the police station, Kohta finds a Suppressed MP5 SFK, but gives it to Saya in exchange for her mom's Luger P08 pistol. He is based on Kouta Hirano, creator of the Hellsing manga. Hirano himself is aware of the related character, writing in one afterword of Hellsing that "Now if you’ll excuse me, I have to go kill zombies at my high school." Shizuka Marikawa is a nurse at Fujimi High School. At the beginning of the story, Marikawa is nearly killed by a student-turned-zombie but is saved by Saeko Busujima. She has a rather ditsy personality, and her large boobs and butt size is often used as a comical element in the story. She is close friends with Rika Minami, who works as